CN213331297U - Cylinder head assembly with dual injector port injection and integrated exhaust structure - Google Patents
Cylinder head assembly with dual injector port injection and integrated exhaust structure Download PDFInfo
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- CN213331297U CN213331297U CN202021145346.8U CN202021145346U CN213331297U CN 213331297 U CN213331297 U CN 213331297U CN 202021145346 U CN202021145346 U CN 202021145346U CN 213331297 U CN213331297 U CN 213331297U
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Abstract
The utility model provides a cylinder head assembly with two sprayer air flues spray and integrated exhaust structure, include: the device comprises a combustion chamber, a double-oil-injector air passage injection structure, an integrated exhaust structure and a control module, wherein the combustion chamber comprises four cylinders, and each cylinder is matched with two oil injectors; the integrated exhaust structure is provided with four exhaust passages which are respectively and correspondingly connected with four cylinders, the first cylinder exhaust passage and the fourth cylinder exhaust passage are of independent air passage structures, and the second cylinder exhaust passage and the third cylinder exhaust passage are converged together; the utility model provides a coverage that the single sprayer sprays among the correlation technique has been solved to the cylinder head assembly is little, and is not enough with the air mixing, and the relatively poor scheduling problem of exhaust structure circulation homogeneity through the design of two sprayers and with the integrated exhaust structure design of exhaust passage and exhaust manifold as an organic whole, has improved fuel economy and has used the part to reduce, and engine overall structure simplifies, and occupation space is little, and the complete machine quality reduces, and the engine is more compact.
Description
Technical Field
The utility model relates to an automobile engine field, and especially relate to a cylinder head assembly with two oil sprayer air flue sprays and integrated exhaust structure.
Background
The automobile engine is required to be miniaturized and low in cost while high-efficiency energy saving is required, and the two are sometimes contradictory. The current emission standard is more and more strict, the energy-saving and consumption-reducing pressure is more and more large, how to meet the strict emission standard and realize low oil consumption is achieved, and especially a non-direct injection engine has more and more big challenges under low cost.
In the traditional air passage injection engine, one oil injector is arranged in each cylinder air inlet passage, and the oil is injected and combusted to the two air inlet passages of each cylinder, so that the number of holes of the oil injector is small. The diameter of combustion particles sprayed by the oil sprayer is large, the coverage area is small, the fuel atomization effect is poor, the fuel atomization effect is insufficient to be mixed with air, and the dynamic property, the fuel economy and the emission level have bottlenecks.
In addition, partial heat of the engine can be taken away by exhaust, the heat utilization rate is low, the temperature of the engine cannot be quickly raised when the engine is started, quick warming is realized, and the engine cannot achieve the optimal working environment; the oil consumption and the emission in the starting stage of the engine are poor, and the energy conservation and the emission reduction are not facilitated. When the integrated exhaust manifold technology is applied to a naturally aspirated engine, the engine can be quickly warmed up to achieve the optimal working environment of the engine, and the heat efficiency can be improved by utilizing the exhaust heat.
However, the application of the integrated exhaust manifold technology makes the exhaust pipeline relatively short, and the generally designed exhaust structure has poor flow uniformity, or the flow capacity is low when the flow uniformity is considered, so that the performance of the engine is influenced to a certain extent. Although engine performance may be optimized or improved by other techniques, such as applying VVT techniques or optimizing combustion, engine performance may still deteriorate during some conditions. In addition, the cylinder head integrated with the exhaust manifold needs a cooling water jacket to cool the exhaust manifold structure, and the cooling water jacket is designed to be a full-wrapping exhaust manifold structure. Therefore, the volume of the cooling water jacket is large, and the heat absorbed and taken away is too much, which brings problems to the heat dissipation capacity of the radiator of the engine and causes difficulty in heat management.
Therefore, there is a need to provide an improved technical solution to overcome the above technical problems in the prior art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a cylinder head assembly with two sprayer air flues spray and integrated exhaust structure to the burning particle diameter that the sprayer sprays among the solution correlation technique is big, and coverage is little, and it is poor to fire the oil atomization effect, and is insufficient with the air mixing, and exhaust structure circulation homogeneity is relatively poor, technical problem such as thermal management difficulty.
The technical problem of the utility model is solved and the following technical scheme is adopted to realize.
The utility model provides a cylinder head assembly with two sprayer air flues spray and integrated exhaust structure, a serial communication port, include: the device comprises a combustion chamber, a double-injector air passage injection structure, an integrated exhaust structure and a control module, wherein the combustion chamber comprises a first cylinder, a second cylinder, a third cylinder and a fourth cylinder, and any one of the first cylinder, the second cylinder, the third cylinder and the fourth cylinder is matched with one double-injector air passage injection structure;
the double-injector air passage injection structure comprises two injectors;
the integrated exhaust structure includes: the exhaust system comprises a first cylinder exhaust passage, a second cylinder exhaust passage, a third cylinder exhaust passage and a fourth cylinder exhaust passage, wherein the first cylinder exhaust passage is connected to the first cylinder exhaust passage, the second cylinder exhaust passage is connected to the second cylinder exhaust passage, the third cylinder exhaust passage is connected to the third cylinder exhaust passage, the fourth cylinder exhaust passage is connected to the fourth cylinder exhaust passage, the first cylinder exhaust passage and the fourth cylinder exhaust passage are of independent air passage structures, and the second cylinder exhaust passage and the third cylinder exhaust passage are converged together;
the control module is connected to the dual injector air passage injection structure.
Further, the double-injector air passage injection structure further comprises an air inlet passage and two air inlet valves; the air inlet is divided into two branches in the middle of the air passage; the two oil sprayers respectively correspond to the two branch inlets of the air inlet channel, two branch outlets of the air inlet channel respectively correspond to the two inlet valves, and fuel sprayed by the oil sprayers sequentially passes through the corresponding branches of the air inlet channel and enters the corresponding cylinders of the combustion chamber after the inlet valves.
Furthermore, the air inlet channel is of a fish belly type flow line structure.
Furthermore, an oil beam sprayed by the oil sprayer forms a certain angle with a central axis of the oil sprayer, and the central direction of the oil beam is aligned with the lower side of the intake valve.
Further, the angle between the oil beam sprayed by the oil sprayer and the central axis of the oil sprayer is 7.5-15 degrees.
Further, the oil injector is provided with 12 spray holes, and the distance between the oil beam injection starting point and the center of the air inlet valve is 60 mm-80 mm.
Furthermore, the first cylinder exhaust passage and the fourth cylinder exhaust passage are symmetrically distributed relative to a median line of the integrated exhaust structure, and the second cylinder exhaust passage and the third cylinder exhaust passage are symmetrically distributed relative to the median line of the integrated exhaust structure; each exhaust passage in the integrated exhaust structure is of a gradually expanding type, and the cross section area of each exhaust passage in the integrated exhaust structure is gradually increased along the exhaust direction.
Further, the cylinder head assembly with dual injector port injection and integrated exhaust structure further comprises a first exhaust water jacket and a second exhaust water jacket disposed around the first, second, third and fourth cylinders; each of the first, second, third and fourth cylinders further comprises a spark plug and a valve nose bridge; the first exhaust jacket comprises a cylinder head jacket, and the cylinder head jacket surrounds the spark plug and the valve nose bridge.
Furthermore, the first exhaust water jacket and the second exhaust water jacket are provided with hollow areas for controlling the flow direction and the flow speed of the cooling liquid.
Further, the control module controls the two injectors corresponding to each of the first cylinder, the second cylinder, the third cylinder and the fourth cylinder to be simultaneously opened for injection when the engine is in a high load state; and controlling only one closed valve injection of the two injectors corresponding to each of the first cylinder, the second cylinder, the third cylinder and the fourth cylinder at the time of low engine load.
The utility model provides a cylinder head assembly with two sprayer air flues spray and integrated exhaust structure, it is little to have solved the coverage that single sprayer sprays in the correlation technique, it is not abundant enough with the air mixing, technical problem such as exhaust structure circulation homogeneity is relatively poor, design through two sprayers and with the integrated exhaust structure design of exhaust passage and exhaust manifold integrated as an organic whole, improved fuel economy and use the part to reduce, engine overall structure simplifies, occupation space is little, the whole quality reduces, the engine is more compact.
Drawings
Fig. 1 is a schematic view of an intake surface of a cylinder head assembly with dual injector port injection and integrated exhaust structure according to an embodiment of the present invention.
Fig. 2 is a cross-sectional view of a fuel injector port injection structure of a cylinder head assembly having dual injector port injection and integrated exhaust structures in an embodiment of the present invention.
Fig. 3 is a schematic view of an exhaust passage flow line structure of a cylinder head assembly with dual injector air passage injection and integrated exhaust structures according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of an exhaust structure of a cylinder head assembly with dual injector air passage injection and integrated exhaust structure according to an embodiment of the present invention.
Fig. 5 is a schematic diagram of an exhaust face of a cylinder head assembly having dual injector port injection and integrated exhaust structures in an embodiment of the invention.
Fig. 6 is a schematic structural diagram of the upper half of a cylinder head assembly with dual injector air passage injection and integrated exhaust structure according to an embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a lower half portion of a cylinder head assembly with dual injector air passage injection and integrated exhaust structures according to an embodiment of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects of the present invention will be made with reference to the accompanying drawings and examples.
Fig. 1 is the intake surface schematic diagram of the cylinder head assembly with dual injector air passages injecting and integrated exhaust structure in the embodiment of the present invention, and fig. 2 is the cross-sectional view of the injector air passage injecting structure of the cylinder head assembly with dual injector air passages injecting and integrated exhaust structure in the embodiment of the present invention. Referring to fig. 1 to 2, the present invention provides a cylinder head assembly with dual injector air passage injection and integrated exhaust structure, comprising: the combustion chamber 40 comprises a first cylinder 401, a second cylinder 402, a third cylinder 403 and a fourth cylinder 404, and any one of the first cylinder 401, the second cylinder 402, the third cylinder 403 and the fourth cylinder 404 (figure 6) is matched with one double-injector air passage injection structure 10.
In the embodiment, each dual-injector air passage injection structure 10 comprises an air inlet passage 103, two injectors 101 and two inlet valves 104; the intake passage 103 is divided into two branches in the middle of the air passage; two injectors 101 in the dual injector air passage injection structure 10 are respectively arranged corresponding to inlets of two branches of the air inlet passage 103, outlets of the two branches of the air inlet passage 103 respectively correspond to two inlet valves 104, and fuel injected by the injectors 101 sequentially passes through the corresponding branches of the air inlet passage 103 and the corresponding inlet valves 104 to enter corresponding cylinders of the combustion chamber 40. The air inlet channel 103 of each cylinder is divided into two branches in the middle of the air channel, and the design of the two air inlet valves 104 corresponding to each cylinder respectively can reduce mutual interference between air inlet flows, so that the air and fuel can be fully mixed.
In the embodiment, the oil beam 106 sprayed by the oil injector 101 forms a certain angle with the central axis of the oil injector 101, the angle ranges from 7.5 degrees to 15 degrees, the central direction of the oil beam 106 is aligned with the lower side of the intake valve 104, so that the oil beam 106 is prevented from being blown to the cylinder wall too much, more oil drops can enter the combustion chamber 40 along with the airflow by utilizing the crushing effect generated by the oil beam 106 striking the lower side of the intake valve 104, the oil film accumulated at the position (below the intake valve 104) can be blown away quickly due to the high airflow speed at the lower side of the intake valve 104, and the oil beam 106 is prevented from being blown into an exhaust valve by the airflow directly during heavy load, so that the HC.
In addition, in the present embodiment, the distance from the injection start point of the oil jet 106 to the center of the intake valve 104 is 60mm to 80 mm. Therefore, the initial point of oil injection is closer to the intake valve 104, which reduces the chance that the oil beam 106 forms a larger oil film in the intake channel 103, and in the embodiment, the oil injector 101 has 12 injection holes, and the number of the holes of the oil injector 101 is large, which can reduce the diameter of oil drops, so that the fuel and the gas are mixed more sufficiently, thereby improving the combustion stability and reducing the emission.
In this embodiment, the air inlet 103 has a fish belly type flow line structure, so that high-quality tumble ratio can be formed in the cylinder by air inlet, which is beneficial to improving power performance and economy, reducing combustion consumption and improving emission.
Referring to fig. 3 to 7, the cylinder head assembly with dual-injector air passage injection and integrated exhaust structure of the present invention further includes a first cylinder exhaust passage 201, a second cylinder exhaust passage 202, a third cylinder exhaust passage 203 and a fourth cylinder exhaust passage 204, the exhaust passage of each cylinder is connected to the corresponding cylinder, and the first cylinder exhaust passage 201 and the fourth cylinder exhaust passage 204 are of independent air passage structures and are not communicated with the air passages of other cylinders, so as to reduce the interference between the exhaust pressure waves of each cylinder and make the exhaust of the engine smoother.
In this embodiment, the flow channel of each exhaust passage of the integrated exhaust structure is of a divergent design (fig. 3), and the cross-sectional area of the flow channel gradually increases along the exhaust direction. The full expansion of the gas is ensured, the pressure difference between the cylinder and the exhaust pipeline is reduced, and the pressure of the waste gas in the cylinder is rapidly reduced.
Referring to fig. 4, the exhaust passages are symmetrically distributed on two sides of a median line of the whole exhaust passage, specifically, the first cylinder exhaust passage 201 and the fourth cylinder exhaust passage 204 are symmetrically distributed relative to the median line of the whole exhaust passage, and the second cylinder exhaust passage 202 and the third cylinder exhaust passage 203 are symmetrically distributed relative to the median line of the whole exhaust passage.
Further, referring to fig. 5, in this embodiment, the integrated exhaust structure further includes exhaust outlets, the exhaust outlets are divided into a first exhaust outlet 211, a second exhaust outlet 212, and a third exhaust outlet 213, the first exhaust outlet 211 is an exhaust outlet of the first cylinder 401 and is communicated with the first cylinder exhaust passage 201, the third exhaust outlet 213 is an exhaust outlet of the fourth cylinder 404 and is communicated with the fourth cylinder exhaust passage 204, the second exhaust outlet 212 is a common exhaust outlet of the second cylinder 402 and the third cylinder 403 and is communicated with the second cylinder exhaust passage 202 and the third cylinder exhaust passage 203, and the second cylinder exhaust passage 202 and the third cylinder exhaust passage 203 are joined together at a position close to the second exhaust outlet 212.
In this embodiment, the shape of the exhaust outlet is a rectangle with round corners, wherein the first exhaust outlet 211 and the third exhaust outlet 213 are approximately U-shaped, and the second exhaust outlet 212 is a rectangle; the cross-sectional area of the second exhaust gas outlet 212 is larger than the cross-sectional area of the first exhaust gas outlet 211 or the third exhaust gas outlet 213.
Furthermore, the lengths of the exhaust passage flow lines from the exhaust passage inlets of the second cylinder 402 and the third cylinder 403 to the second exhaust outlet 212 are the same, the length of the exhaust passage flow line from the exhaust passage inlet of the first cylinder 401 to the first exhaust outlet 211 is basically the same as the length of the exhaust passage flow line from the exhaust passage inlet of the fourth cylinder 404 to the third exhaust outlet 213, and the ratio of the length of the exhaust passage flow line from the exhaust passage inlet of the second cylinder 402 to the second exhaust outlet 212 to the length of the exhaust passage flow line from the exhaust passage inlet of the first cylinder 401 to the first exhaust outlet 211 is 3:4, so that the pressure at the exhaust valve is reduced, rapid exhaust is facilitated, and the engine performance under partial working conditions is improved. It should be noted that the flow line of the exhaust passage of the present invention refers to the central axis of the exhaust passage, and the direction of the flow line of the exhaust passage changes along with the direction of the exhaust passage.
In the first cylinder 401, the second cylinder 402, the third cylinder 403 and the fourth cylinder 404, each cylinder is further provided with two sub exhaust passages, the two sub exhaust passages of each cylinder are converged together, and the cross-sectional areas of the two sub exhaust passages of each cylinder after the two sub exhaust passages are converged are the same.
The integrated exhaust structure can reduce the pressure of residual exhaust gas in the cylinder, and has the effects of reducing the coefficient of the residual exhaust gas, improving the charge coefficient, reducing the pumping loss and improving the exhaust efficiency.
Referring to fig. 6 to 7, the cylinder head assembly with dual injector port injection and integrated exhaust structure further includes a first exhaust water jacket 306 and a second exhaust water jacket 305, the first exhaust water jacket 306 and the second exhaust water jacket 305 being disposed around each cylinder of the combustion chamber; each of the first cylinder 401, the second cylinder 402, the third cylinder 403, and the fourth cylinder 404 further includes a spark plug 301 and a valve nose 302; the first exhaust jacket 306 includes a cylinder head jacket 3061, and the cylinder head jacket 3061 surrounds the spark plug 301 and the valve nose 302. Furthermore, cooling channels of the cylinder head water jacket 3061 are separately arranged at the peripheries of the valve nose bridge 302 and the combustion chamber 40, the cooling liquid is controlled to flow from the lower part of the exhaust side to the periphery of the combustion chamber 40 along the valve nose bridge 302 through the water through holes 307, transverse flow is achieved, the valve nose bridge 302 and the combustion chamber 40 are cooled in a surrounding mode through the cooling liquid (the direction indicated by arrows in fig. 6 and 7 is the flowing direction of the cooling liquid), cooling is more sufficient, the peripheral temperature of the valve nose bridge 302 and the combustion chamber 40 is effectively controlled, fatigue cracks caused by overhigh temperature are avoided, and control over occurrence of knocking and early ignition is facilitated. Whereas conventional cooling designs have partially achieved longitudinal flow of the cylinder head, with coolant flowing from the front of the engine to the rear of the engine, the cooling of the various combustion chambers 40 of the cylinder head is uneven, particularly in the region of the nose 302 and spark plug 301 of the valve, where the thermal load is high.
The first exhaust jacket 306 is a partial cooling jacket below the integrated exhaust structure, wherein the cooling channel is directly connected with the water through hole 307 and the jacket surrounding the combustion chamber 40, and the cooling liquid directly enters from the exhaust side of the cylinder block through the water through hole 307 and respectively flows to the lower part of the first exhaust jacket 306 to cool the first exhaust jacket 306 and the periphery of the exhaust outlet. The second exhaust water jacket 305 is a cooling water jacket above the integrated exhaust structure, and is a cooling passage passing from the water jacket body to the exhaust valve, and the coolant flows from the water jacket body to the upper portion of the second exhaust water jacket 305 for cooling.
Furthermore, in the present embodiment, the control module 50 may control the dual injectors to flexibly select the flow rate and the control strategy, and the flow rate of each injector 101 may be adjusted by a solenoid valve in the injector 101; each fuel injector 101 of each cylinder can independently control the flow, the flow of each fuel injector 101 can be controlled and adjusted under different operation conditions of the engine, and two fuel injectors 101 of each cylinder can simultaneously inject fuel or only one fuel injector 101 can inject fuel.
The large flow can be selected when the engine is in full load, namely two oil injectors 101 of each cylinder are controlled to simultaneously inject fuel oil, and the valve opening injection is controlled, wherein the valve opening injection refers to the condition that the opening time of an intake valve 104 is prior to the fuel injection time of the oil injectors 101, the valve opening injection can suppress knocking under large load, the fuel is evaporated in the cylinder, and the temperature in the cylinder is reduced, so that the inflation efficiency of the engine is improved when the engine is in full load, the engine has better injection guide and larger injection flow, and the low-speed torque can also be improved when the oil injectors 101 with large flow are matched with the valve; during low-load or fuel cut-off control of the engine, only one injector 101 in two injectors 101 of each cylinder can be selected to inject fuel, and valve-closed injection is controlled, wherein the valve-closed injection means that the fuel injection time of the injector 101 precedes the opening time of the intake valve 104, and the valve-closed injection can ensure that a homogeneous combustible mixed gas is obtained during low-load of the engine, so that the fuel economy is improved.
The utility model provides a cylinder head assembly with two sprayer air flues spray and integrated exhaust structure, it is little to have solved the coverage that single sprayer sprays in the correlation technique, it is not abundant enough with the air mixing, technical problem such as exhaust structure circulation homogeneity is relatively poor, through the design of two sprayers 101 and with the integrated exhaust structure design of exhaust passage and exhaust manifold as an organic whole, improved fuel economy and use the part to reduce, engine overall structure simplifies, occupation space is little, the complete machine quality reduces, the engine is more compact.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. A cylinder head assembly having dual injector port injection and integrated exhaust structure, comprising: a combustion chamber (40), a dual injector port injection configuration (10), an integrated exhaust configuration and control module (50), the combustion chamber (40) comprising a first cylinder (401), a second cylinder (402), a third cylinder (403), a fourth cylinder (404), any of the first cylinder (401), the second cylinder (402), the third cylinder (403), and the fourth cylinder (404) being associated with one of the dual injector port injection configurations (10);
the double-injector air passage injection structure (10) comprises two injectors (101);
the integrated exhaust structure includes: the exhaust system comprises a first cylinder exhaust passage (201), a second cylinder exhaust passage (202), a third cylinder exhaust passage (203) and a fourth cylinder exhaust passage (204), wherein the first cylinder (401) is connected to the first cylinder exhaust passage (201), the second cylinder (402) is connected to the second cylinder exhaust passage (202), the third cylinder (403) is connected to the third cylinder exhaust passage (203), the fourth cylinder (404) is connected to the fourth cylinder exhaust passage (204), the first cylinder exhaust passage (201) and the fourth cylinder exhaust passage (204) are of independent air passage structures, and the second cylinder exhaust passage (202) and the third cylinder exhaust passage (203) are intersected together;
the control module (50) is connected to the dual injector port injection configuration (10).
2. The cylinder head assembly of claim 1, wherein the dual injector port injection configuration (10) further comprises an intake port (103) and two intake valves (104); the air inlet (103) is divided into two branches in the middle of the air passage; two sprayer (101) respectively with intake duct (103) two branched entrances correspond the setting, intake duct (103) two branched exports respectively with two (104) of intaking valve correspond the setting, the fuel that sprayer (101) jetted passes in proper order and corresponds intake duct (103) branch get into behind (104) the corresponding jar of combustion chamber (40).
3. The cylinder head assembly according to claim 2, wherein the intake passage (103) is of a fish belly type flow line configuration.
4. The cylinder head assembly according to claim 2, characterized in that the fuel injector (101) emits a fuel jet (106) at an angle to the central axis of the fuel injector (101), the fuel jet (106) being centered on the underside of the intake valve (104).
5. The cylinder head assembly according to claim 4, characterized in that the oil jet (106) is at an angle of 7.5 to 15 degrees to a central axis of the injector (101).
6. The cylinder head assembly according to claim 5, characterized in that the injector (101) has 12 nozzle holes, and the distance from the injection start point of the oil jet (106) to the center of the intake valve (104) is 60mm to 80 mm.
7. The cylinder head assembly of claim 1, wherein the first and fourth exhaust ports (201, 204) are symmetrically disposed about a centerline of the integrated exhaust structure, and the second and third exhaust ports (202, 203) are symmetrically disposed about the centerline of the integrated exhaust structure; each exhaust passage in the integrated exhaust structure is of a gradually expanding type, and the cross section area of each exhaust passage in the integrated exhaust structure is gradually increased along the exhaust direction.
8. The cylinder head assembly of claim 1, further comprising a first exhaust water jacket (306) and a second exhaust water jacket (305), the first exhaust water jacket (306) and the second exhaust water jacket (305) disposed around the first cylinder (401), the second cylinder (402), the third cylinder (403), and the fourth cylinder (404); each of the first cylinder (401), the second cylinder (402), the third cylinder (403), and the fourth cylinder (404) further comprises a spark plug (301) and a valve nose bridge (302); the first exhaust water jacket (306) includes a cylinder head water jacket (3061), and the cylinder head water jacket (3061) is disposed around the spark plug (301) and the valve nose bridge (302).
9. The cylinder head assembly of claim 8, wherein the first exhaust water jacket (306) and the second exhaust water jacket (305) are provided with hollowed-out regions (303) that control the flow direction and rate of coolant flow.
10. The cylinder head assembly according to claim 1, characterized in that the control module (50) controls the two injectors (101) provided corresponding to each of the first cylinder (401), the second cylinder (402), the third cylinder (403), and the fourth cylinder (404) to be simultaneously open-valve injected at the time of high engine load; and controlling only one injector (101) of the two injectors (101) corresponding to each of the first cylinder (401), the second cylinder (402), the third cylinder (403) and the fourth cylinder (404) to inject in a closed valve mode at the time of low engine load.
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| WO2024021795A1 (en) * | 2022-07-29 | 2024-02-01 | 浙江春风动力股份有限公司 | All-terrain vehicle and powertrain thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2024021795A1 (en) * | 2022-07-29 | 2024-02-01 | 浙江春风动力股份有限公司 | All-terrain vehicle and powertrain thereof |
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