Combustion system of turbocharging air channel jet gasoline engine

Abstract

The invention discloses a turbocharging air channel injection gasoline engine combustion system which comprises an air filter, an air compressor, an intercooler, a throttle valve, an air inlet manifold and an engine body which are sequentially connected through pipelines, and further comprises an exhaust manifold and a turbine, and the engine body is provided with a first air cylinder, a second air cylinder, a third air cylinder and a fourth air cylinder. The exhaust manifold comprises a first exhaust branch pipe, a second exhaust branch pipe, a third exhaust branch pipe, a fourth exhaust branch pipe, a first exhaust combination pipe, a second exhaust combination pipe and an exhaust main pipe. Exhaust of the first cylinder and exhaust of the fourth cylinder and exhaust of the second cylinder and exhaust of the third cylinder can be converged firstly and then converged to the exhaust manifold, so that optimization of the gas exchange process can be achieved, direct mutual influence of all the cylinders is reduced, exhaust interference in the valve overlapping period is reduced, and the amount of residual exhaust gas in the cylinders is reduced; the air inflation efficiency is improved, the knocking tendency is reduced, the higher exhaust flow speed can be maintained, and the power capability of the turbine is improved.

Description

technical field [0001] The invention relates to an automobile engine, in particular to a combustion system of a turbocharged port injection gasoline engine. Background technique [0002] With the increasingly stringent fuel consumption regulations, the use of turbocharging in automotive gasoline engines to achieve miniaturization and low speed to increase engine operating load to reduce vehicle fuel consumption has become the mainstream technology trend in the industry. However, to develop a high-performance turbocharged gasoline engine, compared with a naturally aspirated gasoline engine, it is necessary to solve two technical problems of catalyst light-off and low-speed pre-ignition. [0003] Under the condition of catalytic converter light-off, the distance between the exhaust valve and the three-way catalytic converter and the heat dissipation area of ​​the general turbocharged gasoline engine are greatly increased compared with those of the naturally aspirated engine, r...

AI Technical Summary

Problems solved by technology

Another technical problem after the gasoline engine is supercharged is low-speed pre-ignition

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