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Double-compression-ratio engine

An engine, double compression technology, applied in the field of mechanical devices, can solve the problems of reduced compression ratio stability, shortened engine life, difficult to achieve, etc., to achieve the effect of improving power response speed, efficiency and output, and prolonging cylinder life.

Inactive Publication Date: 2019-03-01
古长澍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Too high a compression ratio will result in reduced stability and shortened engine life
Most of the existing multi-cylinder engines have a unified and fixed appropriate compression ratio, which cannot adapt to low-load urban working conditions. The effective fuel efficiency is lower than 20% or even worse. The variable compression ratio engine is complicated because of the manufacturing process. Difficult to achieve without widespread promotion

Method used

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  • Double-compression-ratio engine

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Refer to attached figure 1 , the structure of the present embodiment is that it includes low compression cylinder one 1, high compression cylinder two 2, high compression cylinder three 3, low compression cylinder four 4, high compression cylinder intake mechanism, low compression cylinder intake mechanism, low compression cylinder Cylinder one combustion chamber 10, high compression cylinder two combustion chamber 12, high compression cylinder three combustion chamber 14, low compression cylinder four combustion chamber 16, exhaust mechanism 17, crank connecting rod power output shaft, among which the low compression cylinder intake mechanism Including, low-compression cylinder electronic throttle valve 5, low-compression cylinder intake port 8, low-compression cylinder one-intake valve 9, low-compression cylinder four-intake valve 15, and the high-compression cylinder intake mechanism includes high-compression cylinder electronic section Valve 6, high compression cyli...

Embodiment 2

[0017] The difference from Embodiment 1 is that it includes three cylinders, which are respectively two low-compression cylinders and one high-compression cylinder and two high-compression cylinders and one low-compression cylinder according to different consumption demands. Two cylinders share a set of intake mechanism, and the other cylinder has a separate set of intake mechanism. Control the power output of the engine with two sets of air intake mechanisms.

Embodiment 3

[0019] The difference from Embodiment 1 is that it includes two cylinders, one low-compression cylinder and one high-compression cylinder respectively. The low-compression cylinder has a set of intake mechanism, and the other cylinder has a separate set of intake mechanism. Control the power output of the engine with two sets of air intake mechanisms.

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Abstract

The invention discloses a double-compression-ratio engine. The engine comprises a high compression cylinder, a low compression cylinder, a high compression cylinder air inlet mechanism, a low compression cylinder air inlet mechanism, an exhaust mechanism and a crank connecting rod power output shaft. Each air inlet mechanism comprises an electronic throttle valve, a valve set, and a valve transmission set. The engine is provided with two different cylinder acting operation modes at the same time, and during idling, constant speed and deceleration, more acting power is assigned to the high compression cylinder, so that the efficiency is improved, during acceleration, augmentation, and high speed, more power is assigned to the low compression cylinder, so that the power response speed is increased, and the efficiency and the output of acting of the cylinders are correspondingly improved. The double-compression-ratio engine is more suitable for requirements of automobiles on environmentalprotection and power under various working conditions.

Description

technical field [0001] The invention belongs to a mechanical device. Specifically relates to a power mechanism device of a dual compression ratio internal combustion engine. Background technique [0002] An internal combustion engine is a heat engine that burns fuel inside the machine and converts the heat energy it releases directly into power. The most common is the piston internal combustion engine. The piston-type internal combustion engine mixes fuel with air, burns it in its cylinder, and releases heat energy to generate high-temperature and high-pressure gas in the cylinder. The expansion of the gas pushes the piston to do work, and then the mechanical work is output through the crank connecting rod mechanism to drive the driven machine to work. The compression ratio is the ratio of the maximum volume of the cylinder when the piston is at the bottom dead center in the cylinder to the cylinder volume when the piston is at the top dead center. [0003] With the incr...

Claims

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Application Information

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IPC IPC(8): F02B75/20
CPCF02B75/20F02B2075/1816
Inventor 古长澍
Owner 古长澍