WO2018172890A1 - Système d'éclairage de véhicule - Google Patents
Système d'éclairage de véhicule Download PDFInfo
- Publication number
- WO2018172890A1 WO2018172890A1 PCT/IB2018/051728 IB2018051728W WO2018172890A1 WO 2018172890 A1 WO2018172890 A1 WO 2018172890A1 IB 2018051728 W IB2018051728 W IB 2018051728W WO 2018172890 A1 WO2018172890 A1 WO 2018172890A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gate control
- rectifier
- lighting system
- vehicle
- regulator
- Prior art date
Links
- 230000011664 signaling Effects 0.000 claims abstract description 16
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 34
- 229910052710 silicon Inorganic materials 0.000 claims description 34
- 239000010703 silicon Substances 0.000 claims description 34
- 230000001105 regulatory effect Effects 0.000 claims description 30
- 230000003111 delayed effect Effects 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 7
- 239000000446 fuel Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000001934 delay Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/16—Controlling the light source by timing means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/0088—Details of electrical connections
- B60Q1/0094—Arrangement of electronic circuits separated from the light source, e.g. mounting of housings for starter circuits for discharge lamps
Definitions
- the present subject matter relates to a vehicle. More particularly, the present subject matter relates to a lighting system for the vehicle.
- Automotive lighting systems are evolving in several areas including the use of automatic headlight ON system intended to increase the visibility of the motor vehicle to others when vehicle headlamps are turned on.
- automatic headlight ON system intended to increase the visibility of the motor vehicle to others when vehicle headlamps are turned on.
- headlamp activation systems which will automatically turn on at least the headlamp low beams when the vehicle is being operated, and turning them off when the vehicle engine is turned off.
- millions of automobiles on the road could benefit from the enhanced visibility and safety offered by daytime headlamp operation.
- the headlamp being a huge electrical load is actuated through an A.C (alternating current) power supply (alternating current) generated by a permanent magnet generator.
- A.C alternating current
- alternating current alternating current
- the headlamps kept constantly actuated following the starting of the engine deteriorates the engine startability and increases the engine load. Thus, reducing fuel efficiency of the vehicle.
- Another known vehicle lighting system includes a method of improving engine startability wherein the load on the permanent magnet generator load is reduced during engine starting.
- a battery charging voltage is reduced to a lower target value during engine starting and a headlamp supply voltage is reduced using Pulse Width Modulation (PWM) PWM.
- PWM Pulse Width Modulation
- DC Direct Current
- a device for controlling the vehicle headlamp of an automobile is installed in the vehicle.
- the device actuates the headlamp following the starting of the vehicle.
- the provision of a delaying effect in the actuation of the vehicle headlamp requires at least one additional component to be installed on the vehicle for delaying the headlamp operation and hence installation of said at least one additional component becomes difficult in small vehicles such as motorcycle type two-wheeled vehicles and scooter type two- wheeled vehicles.
- An existing vehicle lighting system includes at least one an electronic control unit and at least one switch controlled to supply an output regulated voltage A.C power from a regulator and rectifier unit to at least one A.C load including the vehicle headlamp.
- said at least one electronic control unit receives input from said regulator and rectifier unit (RR) to estimate the frequency of the signal which represents the rotational speed of the engine crankshaft.
- the electronic control unit fetches this frequency reading and decides when to allow power to the lighting loads depending upon the frequency threshold set in the internal logic. This enables engine speed based control of power delivery to lighting loads.
- RR regulator and rectifier unit
- the system is not immune to coupled noise or transients in the input signal and it might estimate wrong frequency which in turn leads to wrong engine speed estimation.
- said vehicle lighting system with said at least one electronic control unit and said at least one switch increases the number of the parts and components on the vehicle, hence increasing assembly time for the parts and components on vehicle.
- Fig.l is a schematic circuit diagram of a vehicle lighting system as per one embodiment of the present invention.
- Fig.2 is a schematic circuit diagram of the vehicle lighting system illustrating at least one gate control circuitry as per one embodiment of the present invention.
- Fig.3 is a schematic circuit diagram of said at least one gate control circuitry illustrating a delay circuit integrally installed therein as per one embodiment of the present invention.
- a continuous headlamp ON condition for motor vehicles involves a plurality of electronic and electrical modifications in the vehicle light system.
- a headlamp switch module electrically coupled to the headlamp and one or more wiring connections in the circuitry of the headlamp are modified in order to change the circuitry design for the vehicle light system.
- the headlamp being a huge electrical load for a permanent magnet generator is actuated through an A.C (alternating current) power supply (alternating current).
- A.C alternating current
- the vehicle lighting system with the continuous ON headlamp following the starting of the engine deteriorates the engine startability and thus increases the engine load.
- degrading the fuel economy of the vehicle degrading the fuel economy of the vehicle.
- the problem of the engine startability and the engine loading can be overcome by switching over to LED headlamps, one or more light sources of lower power consumption or alternatively installing daytime running lamp (DRL) on the vehicle.
- DRL daytime running lamp
- installation of the LED headlamps or alternatively daytime running lights (DRL) on the vehicle increases the number of components, number of wiring connections on the vehicle and thus increasing the overall cost and assembly time on the vehicle and furthermore providing a complex design to the vehicle lighting system.
- an improved vehicle lighting system including reduced number of wiring connections, mounting provisions, reduced number of components and hence a simple design. Further, it is needed to provide an improved vehicle lighting system facilitating improved engine startability with reduced engine load and hence providing better and enhanced fuel economy for the vehicle. [00019] With the above objective in view, it is an object of the present invention to provide an improved vehicle lighting system including a delay circuit as a control circuitry responsible for controlling the actuation of the headlamp ON following the starting of the engine. It is further an object of the present invention to provide the delay circuit facilitating a delaying effect on supply of an AC power to the headlamp following starting of the engine and thus improving engine startability.
- the present invention relates to the vehicle lighting system comprising the permanent magnet generator coupled with the engine for producing an alternating current and a regulator and rectifier (RR) unit operatively connected to said permanent magnet generator for receiving the alternating current.
- said regulator and rectifier (RR) unit includes at least one gate control circuitry and a series configuration of at least two electronic switches.
- said at least one gate control circuitry is configured to regulate said alternating current on said at least two electronic switches for supplying an output regulated and rectified voltage D.C power and an output regulated voltage A.C power to at least one D.C load and at least one A.C load respectively.
- said at least one A.C load includes at least one lighting and signalling device having an input connected to an output of said regulator and rectifier (RR) unit for receiving said output regulated voltage A.C power.
- said at least one lighting and signalling device is the vehicle headlamp.
- said vehicle lighting system further comprises the delay circuit integrally installed in said at least one gate control circuitry of said regulator and rectifier (RR) unit.
- said delay circuit prevents actuation of said vehicle headlamp after the engine attains a predetermined speed following start-up.
- said at least two electronic switches of said regulator and rectifier (RR) unit are Silicon Controlled Rectifiers (SCRs).
- said at least two electronic switches includes a first electronic switch and a second electronic switch.
- said first electronic switch of said at least two electronic switches is a first SCR (Silicon Controlled Rectifier) and said second electronic switch of said at least two electronic switches is a second SCR (Silicon Controlled Rectifier).
- said at least one gate control circuitry includes a first gate control circuit coupled to said first SCR (Silicon Controlled Rectifier) being electrically connected in an AC supply line of said regulator and rectifier (RR) unit.
- said at least one gate control circuitry includes a second gate control circuit coupled to said second SCR (Silicon Controlled Rectifier) being electrically connected in a DC supply line of said regulator and rectifier (RR) unit.
- said delay circuit being integrally installed in said at least one gate control circuitry controls power delivery to said vehicle headlamp until the engine attains said predetermined speed of 1000 rpm following start-up.
- the present invention relates to the delay circuit being integrally installed in said at least one gate control circuitry and hence, imparting a simple structure without entailing the increase in number of component and parts in the vehicle lighting system.
- the delay circuit actuates the headlamp after the engine attains the predetermined speed hence facilitating reduced engine load and improved engine startability.
- said delay circuit being integrally installed in said at least one gate control circuitry of said regulator and rectifier (RR) unit controls the power delivery to the headlamp, until the engine attains the predetermined speed following start-up.
- said predetermined engine speed is 1000 rpm.
- the object of the present invention is to provide the improved vehicle lighting system with the delay circuit being integrally installed on said at least one gate control circuitry of said regulator and rectifier (RR) unit and hence provides a compact, cost effective installation on the vehicle and further involves minimum number of the wiring connections and mounting provisions and provides a delaying effect in supplying the A.C power supply to said at least one lighting and signalling device including the headlamp. Hence, improving the engine startability and providing better fuel economy with lower cranking load.
- RR regulator and rectifier
- the purpose of the present invention is to provide an improved vehicle lighting system for automotive vehicular use. Further, the present invention provides the improved vehicle lighting system with the delay unit integrally installed in said at least one gate control circuitry of said regulator and rectifier (RR) unit hence providing a simple design with said delaying effect in actuation of the headlamp following the starting of the engine.
- the delay circuit is integral circuit of said at least one gate control circuitry. Hence, the delay circuit in said vehicle lighting system can be packaged within said at least one gate control circuitry of said regulator and rectifier (RR) unit without addition of an additional electrical or electronic components on vehicles.
- said delay circuit being integrally installed in said at least one gate control circuitry of said regulator and rectifier (RR) unit delays said output regulated voltage A.C power to said vehicle headlamp by triggering at least one gate of said first SCR (Silicon Controlled Rectifier) of said at least two electronic switches.
- said first SCR (Silicon Controlled Rectifier) of said at least two electronic switches is being electrically connected in said AC supply line of said regulator and rectifier (RR) unit.
- the present invention relates generally to the vehicle lighting system and more particularly to the delay circuit for delaying the actuation of said at least one lighting and signalling device such as the vehicle headlamp.
- said vehicle headlamp is energized after the engine of the vehicle attains the predetermined speed following start-up.
- the delay circuit controls the power delivery to said at least one A.C load including the vehicle headlamp by allowing the power to reach the vehicle headlamp only after the engine attains the predetermined speed which is 1000 rpm.
- said at least one gate control circuitry of said regulator and rectifier (RR) unit includes said first gate control circuit coupled to said first SCR (Silicon Controlled Rectifier).
- said first SCR of said at least two electronic switches of said regulator and rectifier (RR) unit is being electrically connected in the AC supply line of said regulator and rectifier (RR) unit which maintains the output regulated voltage A.C power of said regulator and rectifier (RR) unit across said at least one AC load within a predetermined value.
- said at least one gate control circuitry of said regulator and rectifier (RR) unit includes said second gate control circuit coupled to said second SCR (Silicon Controlled Rectifier).
- said second SCR of said at least two electronic switches of said regulator and rectifier (RR) unit is being electrically connected in the DC supply line of said regulator and rectifier (RR) unit which maintains said at least one DC load within a predetermined value.
- said delay circuit being integrally installed in said at least one gate control circuitry delays the output regulated voltage A.C power during the starting of the vehicle and hence actuates the headlamp after the engine attains the predetermined speed of lOOOrpm.
- said first gate control circuit and said second gate control circuit of said at least one gate control circuitry prevents said output regulated and rectified voltage D.C power across said at least one DC load from exceeding the predetermined value even at high engine speed and low electrical load condition.
- the present invention relates to said improved vehicle lighting system in which the supply of said output regulated voltage A.C power of said rectifier and regulator (RR) unit to said vehicle headlamp is delayed following the starting of the engine.
- the object of the present invention is to provide the delay circuit being integrally installed in said at least one gate control circuitry of said regulator and rectifier (RR) unit.
- the main power is supplied to said at least one input terminal of the delay circuit by means of switching on the vehicle ignition switch (starting the engine).
- the vehicle is started and the delay circuit is delayedly energized to delay output regulated and rectified A.C power from the regulator and rectified unit (RR) to the vehicle headlamp.
- the permanent magnet generator parallely generates power for fully supplying power.
- the delay circuit being integrally installed in said at least one gate control circuitry of the regulator and rectifier (RR) unit of said vehicle lighting system avoids excessive engine load and hence provide a simple, improved, compact and cost effective installation of the delay circuit on the vehicle without increase in the number of components.
- Yet another object of this invention is to provide the delay circuit for the vehicle lighting system for providing the delaying effect in supplying the A.C (alternating current) power supply to the vehicle headlamp after the engine attains the predetermined speed of lOOOrpm following start-up.
- A.C alternating current
- the present invention relates to the integral installation of the delay in said at least one gate control circuitry of the regulator and rectified unit (RR) unit through a simple structure without increase in the number of components.
- said delay circuit provides the delaying effect in said vehicle lighting system for controlling the energization of motor vehicle headlamps.
- the present invention relates to the delay circuit for turning ON the headlamps of the motor vehicle. Further, the present invention relates to the improved vehicle lighting system for controlling the actuation of the vehicle headlamp.
- the object of the invention is to provide the delay circuit as a headlamp control circuit being integrally installed in said at least one gate control circuitry of said regulator and rectified (RR) unit.
- said delay circuit causes the headlamps to be turned on after the vehicle attains the predetermined speed of lOOOrpm.
- the present invention provides the improved vehicle lighting system that is adapted for normal operation when the vehicle engine is in operation, and the delay circuit automatically turns ON the headlamp after the engine attains the pre determined speed following start-up.
- the present invention provides a new design of said at least one gate control circuitry for the vehicle lightening system hence provides simple installation of the delay circuit on the vehicle without installing any additional components on the vehicle.
- Fig.l is a schematic circuit diagram of the vehicle lighting system (1) as per one embodiment of the present invention.
- said vehicle lighting system (1) comprises said permanent magnet generator (2) coupled with the engine for producing the alternating current, a vehicle battery (9) operatively connected with said permanent magnet generator (2) to be charged therefrom and the regulator and rectifier (RR) unit (3) operatively connected to said permanent magnet generator (2) for receiving the alternating current.
- said regulator and rectifier (RR) unit (3) includes said at least one gate circuitry (100) and said series configuration of said at least two electronic switches (10), (11).
- said at least one gate control circuitry (100) is configured to regulate said alternating current on said at least two electronic switches (10), (11) for supplying the output regulated and rectified voltage D.C power (14) and the output regulated voltage A.C power (15) to said at least one D.C load (7) and said at least one A.C load (5), (6) respectively.
- said at least one A.C load (5), (6) includes said at least one lighting and signalling device (6) having the input connected to the output of said regulator and rectifier (RR) unit (3) for receiving said output regulated voltage A.C power (15).
- said at least one A.C load (5), (6) includes the tailamp (5) and said at least one lighting and signalling device (6).
- said at least one lighting and signalling device (6) is the headlamp.
- at least one lighting and signalling device (6) being the headlamp has a high beam filament (6a) and a low beam filament (6b).
- said high beam filament (6a) and said low beam filament (6b) of the headlamp is selected by using a control switch (4).
- the fuse (8) protects the wiring harness against a short circuit condition of the vehicle battery (9) and the vehicle ignition switch (not shown) connects or disconnects battery (9) from said at least one D.C load (7).
- said vehicle lighting system (1) further comprises the delay circuit (200) (shown in Fig 2) integrally installed in said at least one gate control circuitry (100) of said regulator and rectifier (RR) unit (3).
- said delay circuit (200) prevents the actuation of said at least one lighting and signalling device (6) after the engine attains the predetermined speed.
- each of said at least two electronic switch (102) of said regulator and rectifier (RR) unit (3) is the Silicon Controlled Rectifier (SCR).
- said at least two electronic switches (10), (11) includes the first electronic switch (10) and the second electronic switch (11).
- said first electronic switch (10) of said at least two electronic switches (10), (11) is the first SCR (Silicon Controlled Rectifier) (10) and said second electronic switch (11) is the second SCR (Silicon Controlled Rectifier) (11).
- said at least one gate control circuitry (100) includes the first gate control circuit (100a) coupled to said first SCR (Silicon Controlled Rectifier) (10) being electrically connected across the AC supply line (16) of said regulator and rectifier (RR) unit (3).
- said at least one gate control circuitry (100) includes the second gate control circuit (100b) coupled to said second SCR (Silicon Controlled Rectifier) (11) being electrically connected in the D.C supply line (13) of said regulator and rectifier (RR) unit (3).
- said delay circuit (200) being integrally installed in said at least one gate control circuitry (100) controls power delivery to said at least one A.C load (5), (6) including said vehicle headlamp until the engine attains said predetermined speed of 1000 rpm following start-up.
- a positive half wave of the voltage across said permanent magnet generator (2) is provided for supplying to said at least one D.C load (7) through said second SCR (Silicon Controlled Rectifier) (11) being electrically connected across the D.C supply line of said regulator and rectifier (RR) unit (3).
- a capacitor (12) filters the output regulated and rectified voltage D.C power (14) and supplies to said at least one D.C load (7) and said vehicle battery (9).
- a negative half wave of the voltage across said permanent magnet generator (2) is provided for supplying to said at least one A.C load (5), (6) through the first gate control circuit (100a) coupled to said first SCR (Silicon Controlled Rectifier) (10) being electrically connected in the A.C supply line (16) of said regulator and rectifier (RR) unit (3).
- said output regulated voltage A.C power (15) is delayed during the engine starting by triggering the first gate control circuit (100a) coupled to said first SCR (Silicon Controlled Rectifier) (10) being electrically connected across the A.C supply line (16) of said regulator and rectifier (RR) unit (3), until an amplitude of the voltage across the permanent magnet generator (2) exceeds a predetermined value.
- Fig.2 is a schematic circuit diagram of the vehicle lighting system (1) illustrating said at least one gate control circuitry (100) as per one embodiment of the present invention.
- said regulator and rectifier (RR) unit (3) of the vehicle lighting system (1) includes said at least one gate circuitry (100) and the series configuration of said at least two electronic switches (10), (11).
- said delay circuit (200) is integrally installed in said at least one gate control circuitry (100) of said regulator and rectifier (RR) unit (3).
- said delay circuit (200) prevents actuation of said vehicle headlamp (6) until the engine attains the predetermined speed of said lOOOrpm.
- said at least two electronic switches (10), (11) of said regulator and rectifier (RR) unit (3) includes the first electronic switch (10) and the second electronic switch (10).
- said at least one gate circuitry (100) of said regulator and rectifier (RR) unit (3) includes the first gate control circuit (100a) and the second gate control circuit (100b).
- said first electronic switch (10) of said at least two electronic switches (10), (11) is the first SCR (Silicon Controlled Rectifier) (10) being electrically connected in the AC supply line (16) of said regulator and rectifier (RR) unit (3) and said second electronic switch (11) is the second SCR (Silicon Controlled Rectifier) (11) being electrically connected across the D.C supply line (13) of said regulator and rectifier (RR) unit (3).
- said first gate control circuit (100a) of said at least one gate control circuitry (100) is coupled to said first SCR (Silicon Controlled Rectifier) (10) and said second gate control circuit (100b) of said at least one gate control circuitry (100) is coupled to said second SCR (Silicon Controlled Rectifier).
- said delay circuit (200) being integrally installed in said at least one gate control circuitry (100) controls the power delivery to said at least one lighting and signalling device (6) until the engine attains said predetermined speed of 1000 rpm following start-up.
- Fig.3 is a schematic circuit diagram of said at least one gate control circuitry (100) illustrating the delay circuit (200) integrally installed therein as per one embodiment of the present invention.
- said regulator and rectifier (RR) unit (3) includes said at least one gate control circuitry (100), said series configuration of said at least two electronic switches (10), (11) and the delay circuit (200) being integrally installed in said at least one gate control circuitry (100).
- said first electronic switch (10) of said at least two electronic switches (10), (11) is the first SCR (Silicon Controlled Rectifier) (10) being electrically connected in the AC supply line (16) of said regulator and rectifier (RR) unit (3) and said second electronic switch (11) is the second SCR (Silicon Controlled Rectifier) (11) being electrically connected in the DC supply line (13) of said regulator and rectifier (RR) unit (3).
- said first gate control circuit (100a) of said at least one gate control circuitry (100) is coupled to said first SCR (Silicon Controlled Rectifier) (10) and said second gate control circuit (100b) of said at least one gate control circuitry (100) is coupled to said second SCR (Silicon Controlled Rectifier) (11).
- the alternating voltage across the permanent magnet generator (2) is low.
- the first gate control circuit (100a) of the first SCR (10) is pulled to ground.
- the first SCR (10) being electrically connected in the AC supply line of said regulator and rectifier (RR) unit (3) does not conduct and hence said output regulated voltage A.C power (15) of said regulator and rectifier (RR) unit (3) is absent.
- the generated voltage also increases and hence the zener diode Z5 allows the transistor T6 to be turned ON.
- the transistor T5 is switched OFF.
- the zener diode Z5 value is selected to ensure that said output regulated voltage A.C power (15) of said regulator and rectifier (RR) unit (3) is delayed upto the predetermined engine speed of 1000 rpm.
- a transistor T2 is turned ON as a base-emitter junction is reverse biased through a diode D2, a zener diode Z3 and a resistor R8.
- a capacitor C2 and a resistor R7 helps in ensuring that a voltage across the transistor T2 base-emitter is within a predetermined value and provides a substantially noise-free high-frequency signals.
- the first SCR Silicon Controlled Rectifier (10) is turned ON using a collector current through a resistor R9.
- a resistor R10 and a capacitor C3 ensure that the voltage across the first SCR SI (10) is within permissible limits and is free from high frequency noise signals.
- reverse breakdown voltages across said zener diode Zl and zener diode Z2 are selected in such a manner that a transistor Tl remains OFF for a negative peak voltage of the permanent magnet generator (2) below a first predetermined value.
- the transistor Tl turns ON and connects the transistor T2 base to the ground. Thus, preventing the actuation of the first SCR (10).
- the output regulated voltage A.C power (15) across said at least one A.C load (5), (6) is thus maintained to be within the first predetermined value.
- said resistors Rl, R2, R3, R4, R5 helps in providing precise reference voltage for said zener diodes Zl and Z2.
- said diode Dl and diode D2 ensure reverse voltage protection for the transistor Tl.
- the second gate control circuit (100b) of said at least one gate control circuitry (100) of said regulator and rectifier (RR) unit (3) is coupled to said second SCR (Silicon Controlled Rectifier) (11).
- said second SCR (Silicon Controlled Rectifier) (11) of said at least two electronic switches (10), (11) is being electrically connected in said DC supply line (13) of said regulator and rectifier (RR) unit (3).
- said D.C supply line (13) the voltages across the vehicle battery (9) and said at least one D.C load (7) is maintained within a second predetermined value by using the transistor T3 and the transistor T4.
- the transistor T4 when the output regulated and rectified voltage D.C power (14) across said at least one D.C load (7) is within the second predetermined value, the transistor T4 remains OFF.
- the transistor T3 emitter-base junction is forward biased using a resistor Rll and a resistor R12.
- a transistor T3 emitter current turns ON the second SCR (11) during each positive half cycle of the output voltage across the permanent magnet generator (2).
- the transistor T4 when voltage across said at least one D.C load (7) exceeds the predetermined second value, the transistor T4 turns ON due to a reverse break down of the zener diode Z4.
- a capacitor C4 provides a precise reference voltage for the transistor T4 and allows precise turn OFF of the transistor T3 after said output regulated and rectified voltage D.C power across said at least one D.C load (7) voltage exceeds the second predetermined value.
- the resistor R14 and a capacitor C5 maintain a gate-cathode voltage across said second SCR (11) within permissible limits and hence prevents the high frequency noise signals from affecting a gate cathode junction of said second SCR (11).
- the delay circuit (200) being integrally installed in said at least one gate control circuitry (100) of said regulator and rectifier (RR) unit (3) delays the said output regulated voltage A.C power (15) to the vehicle headlamp (6) during starting of the vehicle and after the engine attains said predetermined speed of 1000 rpm.
- said first gate control circuit (100a) and the second gate control circuit (100b) of said at least one gate control circuitry (100) of said regulator and the rectifier (RR) unit (3) prevents the output regulated and rectified voltage D.C power (14) across said at least one D.C load (7) from exceeding the second predetermined value even at high engine speed and low electrical load condition.
- the second gate control circuit (100b) of said at least one gate control circuitry (100b) along with the delay circuit (200) does not lead to actuation of the headlamp.
- the present invention discloses the delay circuit integrally installed in said at least one gate control circuitry of said regulator and rectifier (RR) unit of the vehicle lighting system and hence provides a simple, compact and cost-effective installation of said delay circuit on vehicle without increasing the number of components and parts on the vehicle.
- the delaying effect provided by said delay circuit controls the output regulated A.C power delivered to said vehicle headlamp after the engine attains the predetermined speed and hence provide the improved engine startability and idling stability with better fuel economy for the vehicle.
- Improvements and modifications may be incorporated herein without deviating from the scope of the invention.
Landscapes
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
La présente invention concerne un système d'éclairage de véhicule (1) comprenant un circuit de retard (200) qui est installé monobloc dans ledit au moins un ensemble de circuits de commande de grille (100) de ladite unité (3) de régulateur et de redresseur (RR). Le circuit de retard (200) empêche l'actionnement dudit au moins un dispositif d'éclairage et de signalisation (6) après que le moteur atteint une vitesse prédéterminée suite au démarrage.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201880019335.4A CN110431042A (zh) | 2017-03-20 | 2018-03-15 | 车辆照明系统 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IN201741009611 | 2017-03-20 | ||
IN201741009611 | 2017-03-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2018172890A1 true WO2018172890A1 (fr) | 2018-09-27 |
Family
ID=63586480
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2018/051728 WO2018172890A1 (fr) | 2017-03-20 | 2018-03-15 | Système d'éclairage de véhicule |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN110431042A (fr) |
WO (1) | WO2018172890A1 (fr) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5811888A (en) * | 1996-11-12 | 1998-09-22 | Hsieh; Cheng-Tien | Automatic vehicle power and headlight controlling device with detecting function of a generator and delayed effect |
US20070120366A1 (en) * | 2002-06-06 | 2007-05-31 | Grant Jeffrey P | Starter system for portable internal combustion engine electric generators using a portable universal battery pack |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI558586B (zh) * | 2014-01-09 | 2016-11-21 | Kwang Yang Motor Co | Lighting delay system for electric vehicles |
KR102072256B1 (ko) * | 2015-03-27 | 2020-02-03 | 매그나칩 반도체 유한회사 | 전류 보상 회로 및 이를 포함하는 조명 장치 |
US10029608B2 (en) * | 2015-09-04 | 2018-07-24 | Ford Global Technologies, Llc | Automatic vehicle lighting control |
CN106255294A (zh) * | 2016-09-26 | 2016-12-21 | 江苏天安智联科技股份有限公司 | 一种汽车驾驶室延时照明控制电路 |
-
2018
- 2018-03-15 CN CN201880019335.4A patent/CN110431042A/zh active Pending
- 2018-03-15 WO PCT/IB2018/051728 patent/WO2018172890A1/fr active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5811888A (en) * | 1996-11-12 | 1998-09-22 | Hsieh; Cheng-Tien | Automatic vehicle power and headlight controlling device with detecting function of a generator and delayed effect |
US20070120366A1 (en) * | 2002-06-06 | 2007-05-31 | Grant Jeffrey P | Starter system for portable internal combustion engine electric generators using a portable universal battery pack |
Also Published As
Publication number | Publication date |
---|---|
CN110431042A (zh) | 2019-11-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4667129A (en) | Method and device for automatically switching on and off the headlights of a motor vehicle | |
US20110115287A1 (en) | Vehicular power supply circuit | |
US6275398B1 (en) | Voltage control apparatus for vehicle-onboard electric generator | |
JP2008126958A (ja) | 可変負荷型点灯回路 | |
MXPA06010338A (es) | Sistema electrico de voltaje dual. | |
KR20000068679A (ko) | 발전기 제어 방법 | |
US3959708A (en) | Battery charging systems for road vehicles | |
US4723095A (en) | Daytime running lights using turn signal lamps | |
US8275504B2 (en) | Stabilization apparatus and method for stabling load voltage of vehicle | |
US7301284B2 (en) | Lighting control circuit for vehicle lighting equipment | |
US4841199A (en) | Electrical system for vehicle daytime running lights | |
WO2018172890A1 (fr) | Système d'éclairage de véhicule | |
EP0448064A1 (fr) | Système pour recharger la batterie d'un véhicule à moteur | |
Mednik | Automotive LED lighting needs special drivers | |
WO2018172899A1 (fr) | Système de lumière automatique | |
CN1255918C (zh) | 灯照明和电池充电控制系统 | |
EP1087643B1 (fr) | Circuit de commande d'éclairage d'une lampe | |
US6922026B2 (en) | Light fixture control system | |
US20020047690A1 (en) | Power generation control unit for vehicles | |
EP0231246A1 (fr) | Generateur electrique | |
CA1238943A (fr) | Methode et dispositif d'allumage et d'extinction automatiques des phares d'un vehicule automobile | |
CA1316208C (fr) | Systeme de commande d'eclairage pour vehicules automobiles | |
WO2022208524A1 (fr) | Système de démarrage/d'arrêt | |
JP2003011748A (ja) | 自動車に設けられる電気部品のための電源装置 | |
JP2576518Y2 (ja) | 電源装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 18770412 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 18770412 Country of ref document: EP Kind code of ref document: A1 |