Method and device for adjusting compression ratio of engine

A compression ratio adjustment, engine technology, applied in the direction of engine control, machine/engine, mechanical equipment, etc., can solve the problems of increasing energy consumption/fuel consumption, power consumption, etc., and achieve the effect of reducing energy consumption, simple structure, and low cost

Active Publication Date: 2021-11-19
DONGFENG MOTOR GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the hydraulic control device of this invention is used to change or stabilize the compression ratio of the engine, the above-mentioned hydraulic supply device requires the motor and the oil pump to work to pressurize the oil at the main oil passage of the engine in order to provide high-pressure oil, and the motor and the oil pump work. Consumes electricity, increases energy consumption / fuel consumption

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  • Method and device for adjusting compression ratio of engine

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Embodiment Construction

[0021] The technical solution (including the preferred technical solution) of the present invention will be further described in detail below by means of the accompanying drawings and listing some optional embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0022] The invention discloses a method for adjusting the compression ratio of an engine. The exhaust gas in the engine combustion cylinder 1 is pressurized and then introduced into the engine control cylinder 2; Charge and discharge realizes the displacement of the piston in the engine control cylinder 2.

[0023] The invention also discloses a device for adjusting the compression ratio of the engine. According to the i...

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Abstract

The invention discloses a method and a device for adjusting the compression ratio of an engine. Waste gas in a combustion cylinder of the engine is pressurized and then guided into a control cylinder of the engine; and the position control of the piston in the control cylinder of the engine is realized by charging and discharging the waste gas in an upper chamber and a lower chamber in the control cylinder of the engine. Different compression ratio requirements under different working conditions can be met, the structure is simple, and energy consumption is low.

Description

technical field [0001] The invention belongs to the technical field of variable compression ratio engines, and specifically discloses a method and device for adjusting the compression ratio of an engine. Background technique [0002] Existing vehicles are equipped with fuel or gas piston engines, which are widely used due to their small size and high power. Traditional engines are added with turbines in order to obtain greater power requirements without changing the volume. Supercharging technology, but the compression volume of the engine remains unchanged. When the intake pressure continues to increase, the cylinder pressure of the engine increases, which is very easy to cause the risk of deflagration during the operation of the engine. The first existing solution is a variable compression ratio technology, its working principle is to install a wedge-shaped slider between the cylinder block and the cylinder head, so that the relative position between the combustion chamber...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): F02D15/04
CPCF02D15/04
Inventor王文建
OwnerDONGFENG MOTOR GRP