Burning chamber of diesel engine

Abstract

The present invention discloses a burning chamber of a diesel engine, locating on the top of a piston and divided into two half burning chambers communicated at a symmetry plane of the burning chamber, wherein one half burning chamber is communicated with an inlet valve pits, the other half burning chamber is communicated with a exhaust valve pits, the external wall face of the burning chamber isformed by connecting a set of outer arced face with different curvatures smoothly, and a sectionintersecting line of the external wall face with the top surface of the piston is sunken toward the piston center; the inner wall face of the burning chamber is composed of two tortility helical wimble-shaped faces distributed symmetrically; the external wall face intersects with the inner wall face, thus the burning chamber depth is reduced from the symmetrical face to the two wings upward from the piston circumference, and increased from the inner side to the outer side radially. The high speed and high temperature airflow ejected from the eddy chamber forms an eddy flow in the burning chamber, at the same time forms a stronger jostled stream and turbulent current; it is capable of mixing thefuel and air more fully and rapidly, improving the flame propagation velocity, the combustion is more thoroughly, and the diesel engine economical efficiency, power and discharge are all improved.

Description

combustion chamber of a diesel engine The present invention claims the priority of the Chinese patent application with the application number 200910000753.1 and titled "A Diesel Engine Combustion Chamber" filed on January 9, 2009, the entire content of which is incorporated by reference in the present invention. technical field The invention relates to a combustion chamber of an internal combustion engine, in particular to a main combustion chamber of a vortex chamber type diesel engine. Background technique The diesel engine adopts the working process of compression ignition combustion. At the end of the compression stroke, the air in the cylinder is compressed and its temperature rises and accumulates in the combustion chamber. The fuel injector injects high-pressure oil jets into the high-temperature gas in the combustion chamber and atomizes and mixes them, and then ignites and burns. . Existing combustion chambers are divided into two categories: direct injection ty...

AI Technical Summary

Problems solved by technology

Due to the constriction formed between the end arc surface and the inner arc surface, the squeeze flow area is small, the guiding effect of the inner arc surface is weak, the squeeze flow and turbulent flow formed at the end of the compression stroke are insufficient, and the flow ejected from the vortex chamber is insufficient. High-speed gas collides with each other and causes a large energy loss; therefore, the quality of the mixed gas is not high, and the combustion quality is not satisfactory, which affects the economy, power and emission of diesel engines

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