CN104454158B - Variable-stroke pneumatic internal combustion hybrid power engine and running method thereof - Google Patents
Variable-stroke pneumatic internal combustion hybrid power engine and running method thereof Download PDFInfo
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 43
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- 238000002347 injection Methods 0.000 claims description 44
- 239000007924 injection Substances 0.000 claims description 44
- 239000000446 fuel Substances 0.000 claims description 16
- 239000003921 oil Substances 0.000 claims description 14
- 239000010720 hydraulic oil Substances 0.000 claims description 13
- 238000011084 recovery Methods 0.000 claims description 5
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- 230000002902 bimodal effect Effects 0.000 claims 1
- 238000011017 operating method Methods 0.000 abstract description 5
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- 238000005516 engineering process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
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Abstract
本发明公开了一种可变冲程气动内燃混合动力发动机及其运行方法。它包括至少两个气缸，气缸具有活塞、连杆和曲轴，所述每一个气缸上均设置排气门、进气门和压缩空气气门；本发明发动机能够通过机械结构实现发动机冲程以及四种工作模式的切换，切换机构简单，发动机整体结构较其他混合动力形式紧凑，节省空间，以二冲程空气压缩机形式工作时，可以实现制动能量回收，达到节能的效果；回收的制动能量被储存在气罐内，根据不同的运行工况选择合理的发动机工作模式，可使混合动力发动机工作在最佳区域，动力性经济性和排放性达到更为理想的状态。还具有内燃机工作区域调整功能，可使内燃机工作在高效区域，而多余的动力用于回收压缩空气。
The invention discloses a variable-stroke pneumatic internal-combustion hybrid engine and an operating method thereof. It comprises at least two cylinders, and the cylinder has a piston, a connecting rod and a crankshaft, each of which is provided with an exhaust valve, an intake valve and a compressed air valve; the engine of the present invention can realize the engine stroke and four kinds of work through the mechanical structure Mode switching, the switching mechanism is simple, and the overall structure of the engine is more compact than other hybrid forms, saving space. When working in the form of a two-stroke air compressor, the braking energy can be recovered to achieve the effect of energy saving; the recovered braking energy is stored In the gas tank, choosing a reasonable engine working mode according to different operating conditions can make the hybrid engine work in the best area, and the power economy and emission can reach a more ideal state. It also has the function of adjusting the working area of the internal combustion engine, which can make the internal combustion engine work in a high-efficiency area, and the excess power is used to recover compressed air.
Description
技术领域technical field
本发明涉及一种动力发动机及其运行方法，更具体地说，本发明涉及一种可变冲程气动内燃混合动力发动机及其运行方法。The present invention relates to a power engine and its operating method, more specifically, the present invention relates to a variable stroke pneumatic internal combustion hybrid engine and its operating method.
背景技术Background technique
随着节能减排主题的不断深化，汽车工业致力于寻求高效节能的新技术，来满足日益严格的排放法规。气动内燃混合动力可以利用气动发动机回收内燃机余能，是实现高效低排放的有利途径。中国专利[CN200710067863.0]、中国专利[CN201020158252.4]及中国专利[201120165652.2]分别提出了气动内燃混合动力发动机的系统模式，这些专利或利用内燃机排气加热气动发动机进气，提高压缩空气做功可用能；或将内燃机排气引入气动发动机进行膨胀，回收排气余压；或利用压缩空气对内燃机进行增压，提高内燃机瞬态响应和升功率，但均未涉及发动机制动能量的回收利用。由于气动机多为二冲程发动机，而内燃机多为四冲程发动机，已有的气动内燃混合动力的设计，需将二者进行耦合，多结构复杂，并且不能使混合动力系统保持工作在最佳区域。With the continuous deepening of the theme of energy saving and emission reduction, the automobile industry is committed to seeking new technologies with high efficiency and energy saving to meet the increasingly stringent emission regulations. Pneumatic-internal-combustion hybrid power can use the air-driven engine to recover the residual energy of the internal-combustion engine, which is a favorable way to achieve high efficiency and low emissions. Chinese patent [CN200710067863.0], Chinese patent [CN201020158252.4] and Chinese patent [201120165652.2] respectively proposed the system mode of the pneumatic internal combustion hybrid engine. These patents may use the exhaust of the internal combustion engine to heat the intake air of the pneumatic engine to increase the work done by the compressed air Usable energy; or introduce the exhaust of the internal combustion engine into the air engine for expansion, and recover the exhaust residual pressure; or use compressed air to supercharge the internal combustion engine to improve the transient response and liter power of the internal combustion engine, but none of them involve the recovery and utilization of engine braking energy . Since most of the pneumatic motors are two-stroke engines, and most of the internal combustion engines are four-stroke engines, the existing design of aerodynamic internal combustion hybrid power needs to couple the two, the structure is complex, and the hybrid system cannot keep working in the optimal area. .
发明内容Contents of the invention
本发明的目的在于克服现有技术中的不足，提供一种兼具内燃机模式、气动发动机模式、气动内燃混合动力发动机模式与制动能量回收模式的可变冲程气动内燃混合动力发动机及其运行方法。The purpose of the present invention is to overcome the deficiencies in the prior art, and provide a variable-stroke pneumatic internal combustion hybrid engine and its operating method with internal combustion engine mode, pneumatic engine mode, pneumatic internal combustion hybrid engine mode and braking energy recovery mode .
为解决上述技术问题，本发明是通过以下技术方案实现的：In order to solve the problems of the technologies described above, the present invention is achieved through the following technical solutions:
可变冲程气动内燃混合动力发动机，包括至少两个气缸，气缸具有活塞、连杆和曲轴，所述每一个气缸上均设置排气门、进气门和压缩空气气门；压缩空气气门与压缩空气喷气阀相连，其开闭受压缩空气喷气阀控制；压缩空气喷气阀通过压缩空气进气管、截止阀和调压机构连接至一个储气罐；排气门和进气门由一个可切换的气门驱动机构控制；气门驱动机构包括液压挺柱机构、与液压挺柱机构相对应的单双峰凸轮轴、气门推杆、气门摇臂和摇臂轴；液压挺柱机构包括液压挺柱、液压油腔和滚子；液压挺柱一端通过液压油腔与滚子相连，另一端与气门推杆底端相接，气门推杆顶端通过摇臂轴与气门摇臂一端相连，气门摇臂另一端与排气门、进气门相连；滚子与单双峰凸轮轴的凸轮一一对应相接；液压挺柱机构的液压油腔与液压挺柱电磁阀相连；压缩空气喷气阀的液压油嘴与压缩空气喷气阀电磁阀相连。The variable stroke pneumatic internal combustion hybrid power engine comprises at least two cylinders, and the cylinder has a piston, a connecting rod and a crankshaft, and each cylinder is provided with an exhaust valve, an intake valve and a compressed air valve; the compressed air valve and the compressed air The air injection valve is connected, and its opening and closing is controlled by the compressed air injection valve; the compressed air injection valve is connected to an air storage tank through the compressed air intake pipe, the shut-off valve and the pressure regulating mechanism; the exhaust valve and the intake valve are controlled by a switchable air valve Drive mechanism control; valve drive mechanism includes hydraulic tappet mechanism, single and double peak camshaft corresponding to hydraulic tappet mechanism, valve push rod, valve rocker arm and rocker arm shaft; hydraulic tappet mechanism includes hydraulic tappet, hydraulic oil Cavity and roller; one end of the hydraulic tappet is connected with the roller through the hydraulic oil chamber, the other end is connected with the bottom end of the valve push rod, the top end of the valve push rod is connected with one end of the valve rocker arm through the rocker shaft, and the other end of the valve rocker arm is connected with the valve rocker arm. The exhaust valve and the intake valve are connected; the rollers are connected with the cams of the single and double peak camshaft in one-to-one correspondence; the hydraulic oil chamber of the hydraulic tappet mechanism is connected with the hydraulic tappet solenoid valve; the hydraulic nozzle of the compressed air injection valve is connected with the compression The air injection valve solenoid valve is connected.
所述的单双峰凸轮轴通过链条或皮带与曲轴连接，由曲轴带动单双峰凸轮轴旋转。The single-double-peak camshaft is connected to the crankshaft through a chain or a belt, and the single-double-peak camshaft is driven by the crankshaft to rotate.
所述的压缩空气喷气阀经由压缩空气喷气阀电磁阀与电控柱塞泵相连，压缩空气喷气阀的动力源由电控柱塞泵提供，升程与正时受电控柱塞泵控制。The compressed air injection valve is connected to the electric control plunger pump through the compressed air injection valve electromagnetic valve, the power source of the compressed air injection valve is provided by the electric control plunger pump, and the lift and timing are controlled by the electric control plunger pump.
所述的气门驱动机构的液压挺柱机构经由液压挺柱电磁阀与电控柱塞泵相连，由电控柱塞泵控制液压挺柱机构的液压油腔加压与卸压。The hydraulic tappet mechanism of the valve driving mechanism is connected with the electric control plunger pump through the hydraulic tappet solenoid valve, and the electric control plunger pump controls the pressurization and decompression of the hydraulic oil chamber of the hydraulic tappet mechanism.
所述的可变冲程气动内燃混合动力发动机的运行方法包括如下步骤：The operating method of the variable-stroke pneumatic internal combustion hybrid engine comprises the following steps:
1）发动机全部气缸的压缩空气喷气阀均处于常闭状态，控制液压挺柱电磁阀，使液压挺柱机构切换到进气门、排气门都是与单双峰凸轮轴的单峰凸轮相接合状态，喷油嘴正常喷油，发动机以四冲程内燃机模式工作；1) The compressed air injection valves of all cylinders of the engine are in the normally closed state, and the hydraulic tappet solenoid valve is controlled so that the hydraulic tappet mechanism is switched to the intake valve and the exhaust valve are all in phase with the single peak cam of the single double peak camshaft. In the engaged state, the fuel injector injects oil normally, and the engine works in the four-stroke internal combustion engine mode;
2）电控柱塞泵调节至活塞运行至上止点后供油，发动机全部气缸的压缩空气喷气阀按时打开喷气，控制液压挺柱电磁阀，使液压挺柱机构切换到进气门常闭状态、排气门与单双峰凸轮轴的双峰凸轮相接合状态，喷油嘴关闭，发动机以二冲程气动发动机模式工作；2) The electronically controlled plunger pump is adjusted to supply oil after the piston runs to the top dead center, the compressed air injection valves of all cylinders of the engine are opened on time to inject air, and the hydraulic tappet solenoid valve is controlled to switch the hydraulic tappet mechanism to the normally closed state of the intake valve , The exhaust valve is engaged with the double-peak cam of the single-double-peak camshaft, the fuel injector is closed, and the engine works in the two-stroke air engine mode;
3）电控柱塞泵调节至活塞运行至上止点后供油，发动机部分气缸的压缩空气喷气阀按时打开喷气，液压挺柱机构切换到进气门常闭状态，排气门与单双峰凸轮轴的双峰凸轮相接合状态，喷油嘴关闭，这部分气缸以二冲程气动发动机模式工作；其余气缸的压缩空气喷气阀关闭，液压挺柱机构切换到进气门、排气门都是与单双峰凸轮轴的单峰凸轮相接合状态，喷油嘴正常喷油，这部分气缸以四冲程内燃机模式工作；发动机以气动内燃混合动力发动机模式工作；3) The electronically controlled plunger pump is adjusted to supply oil after the piston runs to the top dead center, the compressed air injection valve of some cylinders of the engine is opened on time to inject air, the hydraulic tappet mechanism is switched to the normally closed state of the intake valve, and the exhaust valve is connected to the single and double peaks The double-peak cams of the camshaft are engaged, the fuel injection nozzle is closed, and these cylinders work in the two-stroke pneumatic engine mode; the compressed air injection valves of the remaining cylinders are closed, and the hydraulic tappet mechanism switches to the intake valve and exhaust valve. In the state of engagement with the single-peak cam of the single-double-peak camshaft, the fuel injector injects oil normally, and these cylinders work in the four-stroke internal combustion engine mode; the engine works in the pneumatic internal combustion hybrid engine mode;
4）电控制柱塞泵调节至活塞运行至上止点前供油，发动机气缸的压缩空气喷气阀按时打开，此时压缩空气气门作为排气门，缸内的压缩空气通过压缩空气气门1排入储气罐内并进行储存，控制液压挺柱电磁阀，使液压挺柱机构切换到进气门与单双峰凸轮轴的双峰凸轮相接合状态，排气门常闭状态，喷油嘴关闭，发动机作为一个二冲程空气压缩机，以制动能量回收模式工作。4) The electric control plunger pump is adjusted to supply oil before the piston runs to the top dead center, and the compressed air injection valve of the engine cylinder is opened on time. At this time, the compressed air valve is used as the exhaust valve, and the compressed air in the cylinder is discharged through the compressed air valve 1. Store in the air storage tank, control the hydraulic tappet solenoid valve, switch the hydraulic tappet mechanism to the state where the intake valve is engaged with the double-peak cam of the single-double-peak camshaft, the exhaust valve is normally closed, and the fuel injection nozzle is closed , the engine works as a two-stroke air compressor in braking energy recovery mode.
与现有技术相比，本发明的有益效果是：Compared with prior art, the beneficial effect of the present invention is:
1）这种可变冲程气动内燃混合动力发动机能够通过机械结构实现发动机冲程以及四种工作模式的切换，切换机构简单，发动机整体结构较其他混合动力形式紧凑，节省空间。1) This variable-stroke pneumatic internal combustion hybrid engine can realize the switching of the engine stroke and four working modes through the mechanical structure. The switching mechanism is simple, and the overall structure of the engine is more compact than other hybrid forms, saving space.
2）混合动力发动机以二冲程空气压缩机形式工作时，可以实现制动能量回收，达到节能的效果；回收的制动能量被储存在气罐内，可以用于气动发动机模式或者气动内燃混合动力发动机模式，实现能量的再利用。2) When the hybrid engine works in the form of a two-stroke air compressor, the braking energy can be recovered to achieve the effect of energy saving; the recovered braking energy is stored in the air tank, which can be used in the pneumatic engine mode or pneumatic internal combustion hybrid power The engine mode realizes the reuse of energy.
3）根据不同的运行工况选择合理的发动机工作模式，可使混合动力发动机工作在最佳区域，动力性经济性和排放性达到更为理想的状态。3) Selecting a reasonable engine working mode according to different operating conditions can make the hybrid engine work in the optimal area, and the power economy and emission can reach a more ideal state.
4）还具有内燃机工作区域调整功能，可使内燃机工作在高效区域，而多余的动力用于回收压缩空气。4) It also has the function of adjusting the working area of the internal combustion engine, which can make the internal combustion engine work in a high-efficiency area, and the excess power is used to recover compressed air.
附图说明Description of drawings
图1为可变冲程气动内燃混合动力发动机的结构示意图；Fig. 1 is the structural representation of variable-stroke pneumatic internal combustion hybrid engine;
图2为本发明的气门驱动机构中的液压挺柱结构示意图；Fig. 2 is a schematic structural view of the hydraulic tappet in the valve drive mechanism of the present invention;
图3为本发明的与液压挺柱相应的单双峰凸轮轴结构示意图；Fig. 3 is a schematic structural view of the single and double peak camshaft corresponding to the hydraulic tappet of the present invention;
图中附图标记为：1 压缩空气喷气阀；2 排气门；3 进气门；4 气门摇臂；5气门推杆；6 活塞；7 连杆；8 液压挺柱机构；9 单双峰凸轮轴；10 液压挺柱电磁阀；11 曲轴；12压缩空气喷气阀电磁阀；13 压缩空气气门；14 压缩空气进气管；15 液压挺柱；16 液压油腔；17 滚子。Reference signs in the figure are: 1 compressed air injection valve; 2 exhaust valve; 3 intake valve; 4 valve rocker arm; 5 valve push rod; 6 piston; 7 connecting rod; 8 hydraulic tappet mechanism; 9 single and double peaks Camshaft; 10 hydraulic tappet solenoid valve; 11 crankshaft; 12 compressed air injection valve solenoid valve; 13 compressed air valve; 14 compressed air intake pipe; 15 hydraulic tappet; 16 hydraulic oil chamber; 17 roller.
具体实施方式detailed description
首先，需要说明的是，本发明中的内燃机形式可以为汽油机、柴油机以及天然气发动机等。下面将以柴油机为例，结合附图对本发明进行详细描述。First of all, it should be noted that the internal combustion engine in the present invention may be a gasoline engine, a diesel engine, a natural gas engine, and the like. The present invention will be described in detail below by taking a diesel engine as an example with reference to the accompanying drawings.
本实施例中可变冲程气动内燃混合动力发动机结构如图1至图3所示。The structure of the variable-stroke pneumatic internal combustion hybrid engine in this embodiment is shown in Fig. 1 to Fig. 3 .
可变冲程气动内燃混合动力发动机，包括至少两个气缸，气缸具有活塞6、连杆7和曲轴11，所述每一个气缸上均设置排气门2、进气门3和压缩空气气门13；压缩空气气门13与压缩空气喷气阀1相连，其开闭受压缩空气喷气阀1控制；压缩空气喷气阀1通过压缩空气进气管14、截止阀和调压机构连接至一个储气罐；排气门2和进气门3由一个可切换的气门驱动机构控制；气门驱动机构包括液压挺柱机构8、与液压挺柱机构8相对应的单双峰凸轮轴9、气门推杆5、气门摇臂4和摇臂轴；液压挺柱机构8包括液压挺柱15、液压油腔16和滚子17；液压挺柱15一端通过液压油腔16与滚子相连17，另一端与气门推杆5底端相接，气门推杆5顶端通过摇臂轴与气门摇臂4一端相连，气门摇臂4另一端与排气门2、进气门3相连；滚子17与单双峰凸轮轴9的凸轮一一对应相接；液压挺柱机构8的液压油腔16与液压挺柱电磁阀10相连；压缩空气喷气阀1的液压油嘴与压缩空气喷气阀电磁阀12相连。The variable-stroke pneumatic internal combustion hybrid engine includes at least two cylinders, the cylinder has a piston 6, a connecting rod 7 and a crankshaft 11, and each cylinder is provided with an exhaust valve 2, an intake valve 3 and a compressed air valve 13; The compressed air valve 13 is connected with the compressed air injection valve 1, and its opening and closing is controlled by the compressed air injection valve 1; the compressed air injection valve 1 is connected to an air storage tank through the compressed air intake pipe 14, a shut-off valve and a pressure regulating mechanism; The door 2 and the intake valve 3 are controlled by a switchable valve driving mechanism; the valve driving mechanism includes a hydraulic tappet mechanism 8, a single double peak camshaft 9 corresponding to the hydraulic tappet mechanism 8, a valve push rod 5, and a valve rocker. Arm 4 and rocker shaft; hydraulic tappet mechanism 8 includes hydraulic tappet 15, hydraulic oil chamber 16 and roller 17; one end of hydraulic tappet 15 is connected with roller 17 through hydraulic oil chamber 16, and the other end is connected with valve push rod 5 The bottom ends are connected, the top of the valve push rod 5 is connected to one end of the valve rocker arm 4 through the rocker shaft, and the other end of the valve rocker arm 4 is connected to the exhaust valve 2 and the intake valve 3; the roller 17 is connected to the single and double peak camshaft 9 The cams of the hydraulic tappet mechanism 8 are connected in one-to-one correspondence; the hydraulic oil cavity 16 of the hydraulic tappet mechanism 8 is connected with the hydraulic tappet solenoid valve 10;
所述的单双峰凸轮轴9通过链条或皮带与曲轴11连接，由曲轴11带动单双峰凸轮轴9旋转。The single and double peak camshaft 9 is connected with the crankshaft 11 by a chain or a belt, and the single and double peak camshaft 9 is driven by the crankshaft 11 to rotate.
所述的压缩空气喷气阀1经由压缩空气喷气阀电磁阀12与电控柱塞泵相连，压缩空气喷气阀1的动力源由电控柱塞泵提供，升程与正时受电控柱塞泵控制。The compressed air injection valve 1 is connected with the electric control plunger pump through the compressed air injection valve electromagnetic valve 12, the power source of the compressed air injection valve 1 is provided by the electric control plunger pump, and the lift and timing are controlled by the electric control plunger pump. pump control.
所述的气门驱动机构的液压挺柱机构8经由液压挺柱电磁阀10与电控柱塞泵相连，由电控柱塞泵控制液压挺柱机构8的液压油腔16加压与卸压。The hydraulic tappet mechanism 8 of the valve driving mechanism is connected to the electric control plunger pump through the hydraulic tappet solenoid valve 10, and the electric control plunger pump controls the hydraulic oil chamber 16 of the hydraulic tappet mechanism 8 to pressurize and depressurize.
本实施例中可变冲程气动内燃混合动力发动的运行方式如下：In this embodiment, the operation mode of the variable-stroke pneumatic-internal-combustion hybrid engine is as follows:
模式一：Mode one:
发动机处于内燃机模式。此时，压缩空气喷气阀电磁阀12旁通卸压，发动机全部气缸的压缩空气喷气阀1均处于常闭状态，控制液压挺柱电磁阀10，使液压挺柱机构8切换到进气门3、排气门2都是与单双峰凸轮轴9的单峰凸轮相接合状态，喷油嘴正常喷油，发动机以四冲程内燃机模式工作。The engine is in combustion engine mode. At this time, the compressed air injection valve electromagnetic valve 12 is bypassed for pressure relief, the compressed air injection valve 1 of all cylinders of the engine is in a normally closed state, and the hydraulic tappet solenoid valve 10 is controlled to switch the hydraulic tappet mechanism 8 to the intake valve 3 , Exhaust valve 2 are all engaged with the single-peak cam of single-double-peak camshaft 9, the fuel injector normally sprays oil, and the engine works with the four-stroke internal-combustion engine mode.
模式二：Mode two:
发动机处于气动发动机模式。此时，电控柱塞泵调节至活塞6运行至上止点后供油，发动机全部气缸的压缩空气喷气阀1按时打开喷气，储气罐内的压缩空气通过压缩空气气门13喷入气缸内，控制液压挺柱电磁阀10，使液压挺柱机构8切换到进气门3常闭状态，排气门2与单双峰凸轮轴9的双峰凸轮相接合状态，喷油嘴关闭，发动机以二冲程气动发动机模式工作。The engine is in air engine mode. At this time, the electronically controlled plunger pump is adjusted to supply oil after the piston 6 runs to the top dead center, the compressed air injection valves 1 of all cylinders of the engine are opened to inject air on time, and the compressed air in the air storage tank is injected into the cylinder through the compressed air valve 13, Control the hydraulic tappet solenoid valve 10 so that the hydraulic tappet mechanism 8 is switched to the normally closed state of the intake valve 3, the exhaust valve 2 is engaged with the double peak cam of the single double peak camshaft 9, the fuel injector is closed, and the engine starts Two-stroke air engine mode works.
模式三：Mode three:
发动机处于气动内燃混合动力发动机模式。电控柱塞泵调节至活塞6运行至上止点后供油，发动机部分气缸的压缩空气喷气阀1按时打开喷气，储气罐内的压缩空气通过压缩空气气门13喷入气缸内，液压挺柱机构8切换到进气门3常闭状态，排气门2与单双峰凸轮轴9的双峰凸轮相接合状态，喷油嘴关闭，这部分气缸以二冲程气动发动机模式工作；其余气缸的压缩空气喷气阀1关闭，液压挺柱机构8切换到进气门3、排气门2都是与单双峰凸轮轴9的单峰凸轮相接合状态，喷油嘴正常喷油，这部分气缸以四冲程内燃机模式工作；发动机以气动内燃混合动力发动机模式工作。The engine is in gas-internal-combustion hybrid engine mode. The electronically controlled plunger pump is adjusted to supply oil after the piston 6 runs to the top dead center, the compressed air injection valve 1 of the cylinder of the engine is opened on time to inject air, the compressed air in the air storage tank is injected into the cylinder through the compressed air valve 13, and the hydraulic tappet Mechanism 8 is switched to the normally closed state of intake valve 3, exhaust valve 2 is engaged with the double-peak cam of single-double-peak camshaft 9, the fuel injector is closed, and these cylinders work in the two-stroke pneumatic engine mode; the rest of the cylinders The compressed air injection valve 1 is closed, the hydraulic tappet mechanism 8 switches to the state where the intake valve 3 and the exhaust valve 2 are engaged with the single-peak cam of the single-double-peak camshaft 9, and the fuel injection nozzle injects oil normally, and this part of the cylinder It works in four-stroke internal combustion engine mode; the engine works in pneumatic internal combustion hybrid engine mode.
模式四：Mode 4:
发动机处于制动能量回收模式。此时电控制柱塞泵调节至活塞6运行至上止点前供油，发动机气缸的压缩空气喷气阀1按时打开，此时压缩空气气门1作为排气门，缸内的压缩空气通过压缩空气气门1排入储气罐内并进行储存，控制液压挺柱电磁阀10，使液压挺柱机构8切换到进气门3与单双峰凸轮轴9的双峰凸轮相接合状态，排气门常闭状态，喷油嘴关闭，发动机作为一个二冲程空气压缩机，以制动能量回收模式工作。The engine is in regenerative braking mode. At this time, the electric control plunger pump is adjusted to supply oil before the piston 6 runs to the top dead center, and the compressed air injection valve 1 of the engine cylinder is opened on time. At this time, the compressed air valve 1 is used as the exhaust valve, and the compressed air in the cylinder passes through the compressed air valve. 1 is discharged into the air storage tank and stored, and the hydraulic tappet solenoid valve 10 is controlled to switch the hydraulic tappet mechanism 8 to the state where the intake valve 3 is engaged with the double-peak cam of the single-double-peak camshaft 9, and the exhaust valve is normally In the closed state, the fuel injector is closed, and the engine works as a two-stroke air compressor in the braking energy recovery mode.
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| CN102042128A (en) * | 2009-10-16 | 2011-05-04 | 大连理工大学 | An engine with an air supply device |
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