CN-121993311-A - Engine with a motor

CN121993311ACN 121993311 ACN121993311 ACN 121993311ACN-121993311-A

Abstract

The application provides an engine which comprises a crankcase, a cylinder block, cylinder heads, a crankshaft connecting rod mechanism, a timing mechanism and a cam mechanism, wherein the cylinder block is connected with the crankcase, the cylinder head is connected with the cylinder block, the crankshaft connecting rod mechanism is at least partially arranged in the crankcase and can rotate relative to the crankcase, the timing mechanism is in transmission connection with the crankshaft connecting rod mechanism, the cam mechanism is arranged on the cylinder heads and is connected with the timing mechanism, the engine comprises a pair of cylinder heads which are distributed in a V shape, the cylinder heads at least partially overlap as seen in the front-back direction of the engine, each cylinder head is provided with a wrong cylinder part which is not overlapped with the other cylinder head, and the timing mechanism corresponding to each cylinder head is at least partially arranged in the wrong cylinder part. By the arrangement, the arrangement of all mechanisms in the engine is more compact, so that the external dimension of the engine is reduced.

Inventors

ZHANG CHENGLIN
ZHOU WEI
LI XUEFENG
FAN QIANKUN

Assignees

浙江春风动力股份有限公司

Dates

Publication Date: 20260508
Application Date: 20250901
Priority Date: 20241105

Claims (10)

1. An engine, comprising: A crankcase; a cylinder block connected to the crankcase; a cylinder head connected to the cylinder block; A crankshaft connecting rod mechanism which is at least partially arranged in the crankcase and can rotate relative to the crankcase; The timing mechanism is in transmission connection with the crankshaft connecting rod mechanism; A cam mechanism mounted to the cylinder head and connected to the timing mechanism; The engine is characterized by comprising a pair of cylinder covers which are distributed in a V shape, wherein the cylinder covers at least partially overlap as seen in the front-rear direction of the engine, each cylinder cover is provided with a wrong cylinder part which is not overlapped with the other cylinder cover, and the timing mechanism corresponding to each cylinder cover is at least partially arranged in the wrong cylinder part.
2. The engine of claim 1, wherein the engine is configured to control the engine speed, The crankshaft connecting rod mechanism comprises a crankshaft and a driving gear sleeved on the crankshaft, the cam mechanism comprises an air inlet cam shaft and an air outlet cam shaft, the air inlet cam shaft is meshed with the air outlet cam shaft through gears, the timing mechanism comprises a first timing gear, a second timing gear and a timing chain, the first timing gear is sleeved on the air inlet cam shaft, the second timing gear is a duplex gear, an inner gear of the second timing gear is in transmission connection with the first timing gear through the timing chain, and an outer gear of the second timing gear is meshed with the driving gear.
3. An engine according to claim 2, wherein, The timing mechanism further comprises a third timing gear, the third timing gear is sleeved on the middle of the exhaust cam shaft, a transmission gear is further arranged on the middle of the intake cam shaft, and the transmission gear is meshed with the third timing gear.
4. An engine according to claim 2, wherein, The cylinder cover is provided with a triangular unfilled corner, and the unfilled corner and the misplaced cylinder part are positioned on the same side of the cylinder cover.
5. The engine of claim 4, wherein the engine is configured to control the engine speed, The length of the exhaust camshaft is smaller than that of the intake camshaft, and the unfilled corner is positioned at one end of the exhaust camshaft, which is close to the wrong cylinder part.
6. An engine according to claim 2, wherein, The offset cylinder portion forms an installation space through which the timing chain passes, and a ratio of a length of the installation space to a length of the cylinder head in a front-rear direction of the cylinder head ranges from 0.56 to 0.74.
7. An engine according to claim 2, wherein, The engine can be in driving connection with the clutch, and the engine is meshed with a flywheel ring gear of the clutch through an external gear of the second timing gear.
8. The engine of claim 1, wherein the engine is configured to control the engine speed, The cylinder block has a pair of cylinder group that is V type distribution, every the cylinder group has two at least cylinders, same at least two in the cylinder group the axis of cylinder is parallel, a pair of the cylinder group between form the chamber that ventilates, the chamber that ventilates with the space intercommunication of crankcase, be provided with labyrinth structure in the chamber that ventilates, the engine still includes the apron that ventilates, the apron that ventilates with the cylinder block is connected, and seals the chamber that ventilates, the apron that ventilates has the intercommunication the chamber that ventilates and external gas outlet.
9. The engine of claim 8, wherein the engine is configured to control the engine, The engine includes a cylinder head including an intake port in communication with a space within the cylinder, and an intake manifold in communication with the air outlet that is capable of distributing received recirculated gas to different ones of the intake ports.
10. The engine of claim 8, wherein the engine is configured to control the engine, The crankcase forms an air inlet and an oil outlet, the space of the crankcase is communicated with the ventilation cavity through the air inlet, the air inlet and the air outlet are distributed along the left-right direction of the engine, the labyrinth structure is positioned between the air inlet and the air outlet, the ventilation cavity is communicated with the space of the crankcase through the oil outlet, and the oil outlet and the air outlet are positioned on the same side of the engine.

Description

Engine with a motor Technical Field The application relates to the field of power systems, in particular to an engine. Background An engine is a device capable of converting chemical energy into mechanical energy, which can power vehicles such as automobiles, motorcycles, and the like. The engine comprises a piston mechanism, a crankshaft connecting rod mechanism, a timing mechanism and a cam mechanism, wherein the piston mechanism can reciprocate under the pressure effect generated by the combustion of fuel and air mixture and drive the crankshaft connecting rod mechanism to rotate, the crankshaft connecting rod mechanism drives the cam mechanism to rotate through the timing mechanism, and the valve of the engine is controlled to open or close through a cam, so that the fuel and air mixture is conveyed into a combustion chamber or the combusted waste gas is discharged. The timing mechanism needs to pass through the crankcase, the cylinder block and the cylinder head of the engine, so that a large space is reserved for arranging the timing mechanism engine, and particularly for a V-shaped engine, two groups of timing mechanisms are required to be arranged for respectively driving cam mechanisms in the two cylinder heads to work, so that the overall size of the engine is large. Disclosure of Invention In order to solve the defects in the prior art, the application aims to provide the engine, wherein the arrangement among all mechanisms in the engine is more compact, so that the overall dimension of the whole engine is smaller. In order to achieve the above purpose, the present application adopts the following technical scheme: The engine comprises a crankcase, a cylinder block, cylinder heads, a crankshaft connecting rod mechanism, a timing mechanism and a cam mechanism, wherein the cylinder block is connected with the crankcase, the cylinder heads are connected with the cylinder block, the crankshaft connecting rod mechanism is at least partially arranged in the crankcase and can rotate relative to the crankcase, the timing mechanism is in transmission connection with the crankshaft connecting rod mechanism, the cam mechanism is arranged on the cylinder heads and is connected with the timing mechanism, the engine comprises a pair of cylinder heads which are distributed in a V shape, the cylinder heads are at least partially overlapped when being observed along the front-back direction of the engine, each cylinder head is provided with a wrong cylinder part which is not overlapped with the other cylinder head, and the timing mechanism corresponding to each cylinder head is at least partially arranged in the wrong cylinder part. Further, the crankshaft connecting rod mechanism comprises a crankshaft and a driving gear sleeved on the crankshaft, the cam mechanism comprises an air inlet cam shaft and an air outlet cam shaft, the air inlet cam shaft is meshed with the air outlet cam shaft through gears, the timing mechanism comprises a first timing gear, a second timing gear and a timing chain, the first timing gear is sleeved on the air inlet cam shaft, the second timing gear is a duplex gear, an inner gear of the second timing gear is in transmission connection with the first timing gear through the timing chain, and an outer gear of the second timing gear is meshed with the driving gear. Further, the timing mechanism further comprises a third timing gear, the third timing gear is sleeved at the middle part of the exhaust cam shaft, the middle part of the intake cam shaft is further provided with a transmission gear, and the transmission gear is meshed with the third timing gear. Further, the cylinder cover is provided with a triangular unfilled corner, and the unfilled corner and the unfilled cylinder are positioned on the same side of the cylinder cover. Further, the length of the exhaust camshaft is smaller than that of the intake camshaft, and the unfilled corner is positioned at one end of the exhaust camshaft, which is close to the wrong cylinder part. Further, the offset cylinder portion forms an installation space through which the timing chain passes, and a ratio of a length of the installation space to a length of the cylinder head in the front-rear direction of the cylinder head ranges from 0.56 to 0.74. Further, the engine can be in driving connection with the clutch, and the engine is meshed with a flywheel ring gear of the clutch through an outer gear of the second timing gear. Further, the cylinder block is provided with a pair of cylinder groups distributed in a V shape, each cylinder group is provided with at least two cylinders, the axes of at least two cylinders in the same cylinder group are parallel, a ventilation cavity is formed between the pair of cylinder groups, the ventilation cavity is communicated with the space of the crankcase, a labyrinth structure is arranged in the ventilation cavity, the engine further comprises a ventilation cover plate, the ventilation cover plate is connec