Efficient ventilation mechanism of diesel engine

Abstract

The invention provides an efficient ventilation mechanism of a diesel engine. The efficient ventilation mechanism comprises a cylinder cover, an intake valve, an exhaust valve, an intake way and an exhaust way, wherein a fixed separation plate is arranged in the cylinder cover in the plane direction formed by valve rods of the intake valve and the exhaust valve; a rotary control valve plate capable of being matched with the separation plate in a cross manner is arranged in the cylinder cover; and the valve plate of a rotary control valve is driven to swing back and forth along the separation plate, so that the intake valve and the exhaust valve can be switched between communication with the intake way and communication with the exhaust way. The efficient ventilation mechanism can increasethe throat circulating area of the valve, effectively improves the engine inflation efficiency and the circulating capacity, is simple and compact in structure, and facilitates engineering application.

Description

technical field [0001] The invention belongs to the technical field of engine ventilation systems, and in particular relates to a high-efficiency ventilation mechanism for diesel engines. Background technique [0002] The internal combustion engine is still the prime mover with the highest thermal efficiency, the largest power per unit volume and unit weight, and is widely used. However, with the gradual shortage of energy in the world and the continuous deterioration of environmental resources, we need internal combustion engines to meet stricter fuel consumption standards and emission regulations. [0003] In order to achieve higher thermal efficiency of traditional diesel engines, the geometric compression setting is higher, and the bottom plate of the cylinder head is difficult to be set in a roof shape like a gasoline engine. Limitation, there is a problem of large intake and exhaust resistance, limited flow capacity, and restricted power and thermal efficiency. Therefo...

AI Technical Summary

Problems solved by technology

[0003] In order to achieve higher thermal efficiency of traditional diesel engines, the geometric compression setting is higher, and the bottom plate of the cylinder head is difficult to be set in a roof shape like a gasoline engine. Limitation, there is a problem of large intake and exhaust resistance, limited flow capacity, and restricted power and thermal efficiency. Therefore, how to improve the charging efficiency of the engine as much as possible and reduce the ventilation loss under the condition of high speed and large flow of intake air, so as to optimize combustion The process of improving engine performance has become the tireless pursuit of engine designers

Images