Diesel engine with swirl chamber

Abstract

The invention discloses a diesel engine with a swirl chamber. The diesel engine comprises a cylinder, a cylinder cover and a piston which define a main combustion chamber. The swirl chamber connected with the main combustion chamber is arranged in the cylinder cover through a passage, the top surface of the piston is a wall surface of the main combustion chamber, a pit which is symmetrical to the passage is arranged on the top surface of the piston, the pit is an annular passage, and an air inlet drainage passage close to an opening of the passage is arranged on the coincide position of the pit. The diesel engine has the advantages that the structural distribution of the pit is favorable for guiding combustion gas into the main combustion chamber so as to improve distribution of the combustion gas in the main combustion chamber.

Description

technical field [0001] The invention relates to a diesel engine, in particular to a diesel engine with a vortex chamber. Background technique [0002] Generally, a diesel engine has a swirl chamber, the swirl chamber is connected to the main combustion chamber through a channel. The top surface of the piston is provided with a pit adjacent to the opening of the passage into the main combustion chamber. In previous designs, the dimples are disk-shaped and symmetrically arranged on the top of the piston adjacent to the channel opening of the vortex chamber. The inlet flow channel is arranged between the disc-shaped pits for guiding the combustion gas from the channel into the pits. The dimples quickly and evenly distribute the combustion gases from the swirl chamber to the main combustion chamber, facilitating fast and even combustion. [0003] In a previous design case, the inlet channel had a tapered depth distribution, with a maximum depth adjacent to the channel opening...

AI Technical Summary

Problems solved by technology

The gap between the piston and the cylinder head already occupies part of the effective minimum volume of the combustion chamber, so the volume that can be occupied by the dimple in the piston crown is limited

[0006] Chinese patent CN101131118A discloses a wide-mouth vortex chamber engine. The piston internal combustion engine adopts the vortex chamber and has many advantages, but its main disadvantage is that the loss of gas flow is large.

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