A gasoline supercharged engine cylinder head cover, a gasoline supercharged engine and a car

Abstract

The invention discloses a gasoline supercharged engine air cylinder cover, a gasoline supercharged engine and an automobile. The gasoline supercharged engine air cylinder cover comprises an air cylinder cover body. A crankcase ventilation system is arranged in the air cylinder cover body and comprises an oil-gas separation cavity and an oil-gas separation mechanism located in the oil-gas separation cavity. An EGR gas integrating channel is arranged in the air cylinder cover body and provided with a first air inlet used for communicating with the oil-gas separation cavity, a second air inlet used for communicating with a waste gas recirculation system and an air outlet used for communicating with an air inlet manifold. The gasoline supercharged engine air cylinder cover is simple in structure, and the technical problem that a crankcase ventilation system is in failure under the low-temperature environment can be effectively solved.

Description

technical field [0001] The invention relates to a cylinder head cover, an engine containing the cylinder head cover and an automobile containing the engine, belonging to the technical field of gasoline direct-injection supercharged engines, in particular to a cylinder head cover of a gasoline supercharged engine, including the cylinder head cover Gasoline supercharged engine and automobiles containing the gasoline supercharged engine. Background technique [0002] At present, due to the limited space layout and lightweight requirements of the engine, the overall layout space of the engine is very compact, and the application of new technologies needs to occupy more space. Most of the cylinder head covers of automobile manufacturers add oil and gas Separate structure, low integration and low assembly efficiency. [0003] During the working process of the engine, the exhaust gas, unburned mixture gas and water vapor in the combustion chamber flow into the crankcase through th...

AI Technical Summary

Problems solved by technology

[0002] At present, due to the limited space layout and lightweight requirements of the engine, the overall layout space of the engine is very compact, and the application of new technologies needs to occupy more space. Most of the cylinder head covers of automobile manufacturers add oil and gas Separate structure, low integration and low assembly efficiency

[0003] During the working process of the engine, the exhaust gas, unburned mixture gas and water vapor in the combustion chamber flow into the crankcase through the gap between the piston and the cylinder wall. After the gas condenses, the engine oil will become thinner and the performance will deteriorate; If the exhaust gas cannot be discharged, the pressure of the crankcase will be too high, causing the oil to leak, and at the same time, it will increase the pollution to the atmosphere

In order to solve the above technical problems, most of the prior art adopts a crankcase ventilation system in the cylinder head cover on the top of the engine, and effectively realizes the separation of engine oil and piston gas through the oil-gas separation mechanism in the crankcase ventilation system. , and introduce the piston gas into the intake manifold through the pipeline. However, when the vehicle is running in a low-temperature environment, the pipeline through which the piston gas flows in the low temperature environment is easy to freeze and block, thus causing the piston gas to be unable to be discharged in time. , affecting the performance of the crankcase ventilation system

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