Electrical-controlled engine having variable compression ratios and variable oil injection positions

Abstract

The invention relates to an electrical-controlled engine having variable compression ratios and variable oil injection positions. The electrical-controlled engine comprises a variable compression ratio mechanism and an oil injection nozzle, wherein the variable compression ratio mechanism can change mechanical compression ratios; the oil injection nozzle and a telescopic mechanism synchronously apply work; besides, the compression ratio when the engine operates at a low load is completely different from the compression ratio when the engine operates at a medium load and the compression ratio when the engine operates at a high load, and the oil injection position when the engine operates at the low load is completely different from the oil injection position when the engine operates at the medium load and the oil injection position when the engine operates at the high load, so that the situations that when engine loads are different and engine speeds are different, the compression ratios are different and the oil injection positions are different are met; the oil injection positions are changed along with the changes of the compression ratios, the generated effect of the changes of the oil injection positions can realize the consistency effect of a combustible gas mixture in a second combustion chamber in a variable compression piston in different positions, and the work of ignition moment is assisted, so that different compression ratios and different oil injection positions for different engine loads and different engine speeds are met, the combustion efficiency of fuel oil is improved, the power capability and the power of the engine are improved, carbon accumulation is reduced, and the service life of a rocker arm, the service life of a cam shaft and the service life of a timechain are effectively prolonged.

Description

technical field [0001] The present invention relates to a gasoline engine, in particular to an engine whose compression ratio can be changed according to engine load and rotation speed. Background technique [0002] The compression ratio of the engine refers to the ratio of the stroke of the working piston in the cylinder to the combustion chamber. The higher the compression ratio, the better the combustion efficiency. However, the higher the compression ratio, the higher the knocking of the engine, and the easier it is for the cylinder and piston to knock and wear. Especially under high load conditions, the power of the engine will drop instead. [0003] As the grade of gasoline gets higher and higher, the increase of octane number is to reduce the knocking caused by the high compression ratio. However, its effect is limited. It can only be controlled at 13:1. Of course, due to the refining and manufacturing process of gasoline in the same region, the compression ratio of...

AI Technical Summary

Problems solved by technology

[0007] The invention proposes a variable compression ratio engine, which solves the problem of uniform compression ratio of different engine loads in the prior art

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