An adiabatic internal combustion engine combustion system based on adiabatic combustor and Miller cycle

Abstract

The invention belongs to the relevant technical field of internal combustion engines, and specifically discloses an adiabatic internal combustion engine combustion system based on an adiabatic combustion chamber and a Miller cycle. The system ensures the reliable operation of the internal combustion engine and improves the overall thermal efficiency of the internal combustion engine through the combination of the adiabatic cylinder and the Miller cycle. The system includes an adiabatic cylinder and an ordinary cylinder. The structure of the adiabatic cylinder is the same as that of the ordinary cylinder. The inner surface of the combustion chamber of the ordinary cylinder is coated with a layer of insulation coating to reduce the heat loss in the combustion chamber; the exhaust of the adiabatic cylinder There is a heat dissipation air passage between the air passage and the intake passage of the ordinary cylinder, which is used to connect the adiabatic cylinder and the ordinary cylinder, and is used to pass the excess air of the adiabatic cylinder through the secondary scavenging of the exhaust valve under heavy load conditions. Into the ordinary combustion chamber, reduce the abnormal combustion tendency of the adiabatic cylinder, and increase the charge coefficient of the ordinary combustion chamber. Through the invention, the thermal efficiency of the internal combustion engine is improved, and the problems such as easy peeling off of the heat insulating coating and excessively high temperature of the inner wall of the cylinder are solved.

Description

technical field [0001] The invention belongs to the technical field related to internal combustion engines, and more specifically relates to an adiabatic internal combustion engine combustion system based on an adiabatic combustion chamber and a Miller cycle. Background technique [0002] Due to its high speed, simple structure, light weight, and stable operation, internal combustion engines are widely used in various fields such as automobiles, ships, and construction machinery. However, internal combustion engines have different forms of energy losses, such as cooling losses, exhaust losses, etc., which reduce their thermal efficiency. With the development of the internal combustion engine industry, the thermal efficiency of the internal combustion engine has become a key bottleneck restricting the development of the internal combustion engine industry, and further improving the thermal efficiency of the internal combustion engine has become a major demand for the internal...

AI Technical Summary

Problems solved by technology

Specifically, through the design of the thermal insulation coating and the Miller cycle in the thermal insulation cylinder, the overall thermal efficiency of the traditional thermal insulation internal combustion engine is not high, the thermal insulation coating is easy to fall off, and the knocking and deflagration caused by the high wall temperature of the thermal insulation cylinder are solved.

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