Six-stroke engine and vehicle with it

Abstract

The invention provides a six-stroke engine and a vehicle having the same. The six-stroke engine comprises a cylinder body, a cylinder head, a main piston, an inlet valve, an exhaust valve and an auxiliary piston. The cylinder head, the cylinder body and the main piston define a combustion chamber. An auxiliary piston chamber is formed in the cylinder head. The auxiliary piston chamber is communicated with the combustion chamber. The auxiliary piston is movably fit in the auxiliary piston chamber. When the main piston is at the main piston top dead center of a compression stroke, the auxiliary piston is at a first position, and when the main piston is at the main piston top dead center of a recompression stroke, the auxiliary piston is at a second position, wherein the distance from the first position to the auxiliary piston top dead center is smaller than that from the second position to the auxiliary piston top dead center. According to the six-stroke engine provided by the invention, the compression ratio of the recompression stroke is reduced to reduce the compression negative work of the recompression process; besides, the energy exhaust gas is fully utilized, the thermal efficiency is increased and the oil consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a six-stroke engine and a vehicle with the six-stroke engine. Background technique [0002] In the related technology, the six-stroke engine includes an intake stroke, a compression stroke, a power stroke, a recompression stroke, a power stroke and an exhaust stroke. In the related technology, the six-stroke engine does not exhaust after the power stroke ends. Due to the high-temperature and high-pressure exhaust gas generated by combustion in the power stroke, and the exhaust gas is not exhausted after the power stroke, it will cause a huge compression negative work in the recompression stroke, which greatly reduces the potential of the six-stroke technology to reduce fuel consumption, and there is room for improvement. Contents of the invention [0003] In view of this, the present invention aims to propose a six-stroke engine to reduce the compression negative work of th...

AI Technical Summary

Problems solved by technology

[0002] In the related technology, the six-stroke engine includes an intake stroke, a compression stroke, a power stroke, a recompression stroke, a power stroke and an exhaust stroke. In the related technology, the six-stroke engine does not exhaust after the power stroke ends. Due to the high-temperature and high-pressure exhaust gas generated by combustion in the power stroke, and the exhaust gas is not exhausted after the power stroke, it will cause a huge compression negative work in the recompression stroke, which greatly reduces the potential of the six-stroke technology to reduce fuel consumption, and there is room for improvement

Images