CN-121993312-A - Engine with a motor

CN121993312ACN 121993312 ACN121993312 ACN 121993312ACN-121993312-A

Abstract

The application provides an engine which comprises a cylinder body, a cylinder cover and an air inlet and exhaust system, wherein the cylinder cover is connected with the cylinder body and forms a combustion chamber with the cylinder cover, the cylinder cover comprises an air passage and a valve guide pipe, the air passage is communicated with the combustion chamber, the valve guide pipe forms a channel communicated with the air passage, the air inlet and exhaust system comprises a valve penetrating through the channel, at least part of the valve extends into the air passage and controls the air passage to be communicated with or disconnected from the combustion chamber, the air inlet and exhaust system further comprises a valve sealing ring, the valve sealing ring is arranged on the cylinder cover and is positioned at the joint of the air passage and the combustion chamber, the valve sealing ring is suitable for accommodating at least part of the valve, the inner edge of the valve sealing surrounds a cylindrical roar, and an included angle larger than 0 DEG is formed between the axis of the roar and the axis of the channel. Through the arrangement, the air inlet efficiency of the air inlet channel is improved, fuel oil and air are fully mixed, and the combustion efficiency of the engine is higher.

Inventors

FAN QIANKUN
ZHOU WEI
WANG JIANGANG
LIU RENBO

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 cylinder block; a cylinder head connected to the cylinder block and forming a combustion chamber with the cylinder head, the cylinder head including an air passage and a valve guide, the air passage communicating with the combustion chamber; An air inlet and exhaust system comprising an air valve penetrating through the air valve guide pipe, wherein at least part of the air valve extends into the air passage and controls the air passage to be communicated with or disconnected from the combustion chamber; The air inlet and exhaust system is characterized by further comprising an air valve sealing ring, wherein the air valve sealing ring is installed on the cylinder cover and is positioned at the joint of the air passage and the combustion chamber, the air valve sealing ring accommodates at least part of the air valve, the inner edge of the air valve sealing ring surrounds a cylindrical roar, and an included angle larger than 0 DEG is formed between the axis of the roar and the axis of the air valve.
2. The engine of claim 1, wherein the engine is configured to control the engine speed, The air duct comprises an air inlet duct capable of conveying fuel oil mixed gas into a combustion chamber, the air valve duct comprises an air inlet valve duct, the air inlet valve duct forms a first channel communicated with the air inlet duct, the air valve comprises an air inlet valve penetrating through the first channel, the air inlet valve can control the air inlet duct to be communicated with or disconnected from the combustion chamber, the air valve sealing ring comprises an air inlet valve sealing ring which is positioned at the joint of the air inlet duct and the combustion chamber and is used for accommodating at least part of the air inlet valve, the inner edge of the air inlet valve sealing ring surrounds an air inlet opening in a cylindrical shape, and the axis of the air inlet opening and the axis of the air inlet valve form a first included angle ranging from 5 degrees to 15 degrees.
3. An engine according to claim 2, wherein, The air passage comprises an exhaust passage capable of exhausting waste gas in the combustion chamber, the valve guide pipe comprises an exhaust valve guide pipe, the exhaust valve guide pipe forms a second passage communicated with the exhaust passage, the valve comprises an exhaust valve penetrating through the second passage, the exhaust valve can control the exhaust passage to be communicated with or disconnected from the combustion chamber, the valve sealing ring comprises an exhaust valve sealing ring, the exhaust valve sealing ring is positioned at the joint of the exhaust passage and the combustion chamber and is used for accommodating at least part of the exhaust valve, the inner edge of the exhaust valve sealing ring surrounds an exhaust hole in a cylindrical shape, a second included angle is formed between the axis of the exhaust hole and the axis of the exhaust valve, and the second included angle is smaller than the first included angle.
4. An engine according to claim 3, wherein, The second included angle ranges from 0 ° to 10 °.
5. An engine according to claim 2, wherein, The cylinder head includes around the intake duct and with the splice of intake valve sealing ring connection, splice is suitable for accomodating the intake valve sealing ring, splice with the intake valve sealing ring is enclosed into the inlet roar.
6. The engine of claim 5, wherein the engine is configured to control the engine speed, The air inlet valve sealing ring is in interference fit with the splicing part.
7. An engine according to claim 2, wherein, The air inlet comprises an air inlet port, the air inlet port is positioned at one end of the air inlet channel, which is away from the combustion chamber, the peripheral wall of the air inlet port comprises a first part and a second part, the surface areas of the first part and the second part are basically the same, the first part is closer to the air inlet port than the second part, the first part and the second part are formed by grinding, and the grinding depth of the first part is larger than that of the second part.
8. An engine according to claim 2, wherein, The air inlet and exhaust system further comprises a throttle valve, the cylinder cover comprises a cylinder cover main body, a first mounting part and a second mounting part, the first mounting part and the second mounting part are connected to the cylinder cover main body, the first mounting part is located above the second mounting part, one end of the air inlet channel, which deviates from the combustion chamber, is an air inlet port, the first mounting part and the second mounting part are distributed around the air inlet port, the first mounting part and the second mounting part are tightly connected with the throttle valve and are provided with end faces which are in butt joint with the throttle valve, and the end faces of the first mounting part are parallel to the end faces of the second mounting part and are not in a plane.
9. The engine of claim 8, wherein the engine is configured to control the engine, The length of the second mounting portion is substantially identical to the length of the first mounting portion in the front-rear direction of the cylinder head.
10. The engine of claim 8, wherein the engine is configured to control the engine, The structure of first installation department with the structure of second installation department is basically unanimous, and both include cantilever and connection platform, the cantilever with the cylinder cap main part links to each other, connection platform is located the cantilever deviates from the one end of cylinder cap main part, and to the upper front of cylinder cap extends.

Description

Engine with a motor Technical Field The application relates to the field of power systems, in particular to an engine. Background The engine is used as a power supply device of vehicles such as automobiles, motorcycles and the like, and can drive a piston to reciprocate in a cylinder through air pressure generated by igniting fuel oil mixture in a combustion chamber and drive a crankshaft to rotate through the piston. During operation of an engine, airflow efficiency is an important factor affecting engine operating efficiency, where airflow efficiency includes both air intake and exhaust efficiency of the engine. In the related art, a turbine device is generally provided at an end of the air duct facing away from the combustion chamber, and the air flow efficiency is improved by means of turbocharging, but the turbine device increases the overall volume of the engine. Under the condition that no additional supercharging device is arranged, how to increase the air flow efficiency of the engine, so that the working efficiency of the engine is improved, and the technical difficulty to be solved in the industry is urgent. Disclosure of Invention In order to solve the defects in the prior art, the application aims to provide an engine with higher working efficiency. In order to achieve the above purpose, the present application adopts the following technical scheme: The engine comprises a cylinder body, a cylinder cover and an air inlet and exhaust system, wherein the cylinder cover is connected with the cylinder body and forms a combustion chamber with the cylinder cover, the cylinder cover comprises an air passage and an air duct, the air passage is communicated with the combustion chamber, the air inlet and exhaust system comprises an air valve penetrating through the air duct, at least part of the air valve extends into the air passage and is controlled to be communicated with or disconnected from the combustion chamber, the air inlet and exhaust system further comprises an air valve sealing ring, the air valve sealing ring is mounted on the cylinder cover and is positioned at the joint of the air passage and the combustion chamber, the air valve sealing ring is suitable for accommodating at least part of the air valve, the inner edge of the air valve sealing ring surrounds a cylindrical roar opening, and an included angle of more than 0 DEG is formed between the axis of the roar opening and the axis of the air valve. Further, the air duct comprises an air inlet channel capable of conveying fuel oil mixture into the combustion chamber, the air valve guide pipe comprises an air inlet valve guide pipe communicated with the air inlet channel, the air valve comprises an air inlet valve penetrating through a first channel formed by the air inlet valve guide pipe, the air inlet valve can control the air inlet channel to be communicated with or disconnected from the combustion chamber, the air valve sealing ring comprises an air inlet valve sealing ring which is positioned at the joint of the air inlet channel and the combustion chamber and is used for accommodating at least part of the air inlet valve, the inner edge of the air inlet valve sealing ring surrounds an air inlet opening in a cylindrical shape, and a first included angle ranging from 5 degrees to 15 degrees is formed between the axis of the air inlet opening and the axis of the first channel. Further, the air duct comprises an exhaust duct which can exhaust waste gas in the combustion chamber, the valve guide pipe comprises an exhaust valve guide pipe communicated with the exhaust duct, the valve comprises an exhaust valve penetrating through a second channel formed by the exhaust valve guide pipe, the exhaust valve can control the exhaust duct to be communicated with or disconnected from the combustion chamber, the valve sealing ring comprises an exhaust valve sealing ring which is positioned at the joint of the exhaust duct and the combustion chamber and is used for accommodating at least part of the exhaust valve, the inner edge of the exhaust valve sealing ring surrounds a cylindrical exhaust roar, a second included angle is formed between the axis of the exhaust roar and the axis of the second channel, and the second included angle is smaller than the first included angle. Further, the second included angle is in the range of 0 DEG to 10 DEG Further, the cylinder head includes around the intake duct and with the splice of intake valve sealing ring connection, splice is suitable for accomodating the intake valve sealing ring, splice and intake valve sealing ring are around into the inlet roar. Further, the air inlet valve sealing ring is in interference fit with the splicing part. Further, the air inlet comprises an air inlet port, the air inlet port is located at one end of the air inlet, which is away from the combustion chamber, the peripheral wall of the air inlet port comprises a first portion and a second portion, the surface areas of the fi