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Gas intake bypass channel of gas engine

A gas engine and gas intake technology, which is applied in the field of control devices for the gas intake flow of gas engines, can solve problems such as difficulty in starting gas engines, changes in gas sources, and difficulties in starting, and achieves solutions to difficulties in starting, starting Simple operation and high degree of automation

Inactive Publication Date: 2012-03-14
SICHUAN CRRC YUCHAI ENGINE CO LTD
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Problems solved by technology

[0005]The purpose of the present invention is to solve the technical problem of the difficulty in starting the existing gas engine, and to provide a gas intake bypass device for the gas engine, which can well Adapt to real-time changes in gas concentration and pressure when the engine starts, and solve the problem of difficult starting caused by changes in gas sources

Method used

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  • Gas intake bypass channel of gas engine
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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Such as figure 1 and figure 2 The gas intake bypass device of the gas engine shown, in order to solve the problem of difficulty in starting, the present invention sets a fuel bypass valve with a smaller diameter between the mixer and the gas control valve, and adjusts it according to the gas pressure and concentration when starting. The opening of the fuel bypass valve solves the difficulty caused by using a large diameter valve to control a small flow.

[0020] When the unit is started, the controller compares the detection signal of the oxygen sensor with the preset parameters, and controls the opening of the gas control valve to make the measured value close to the set value, so as to achieve the set air-fuel ratio, and automatically control.

[0021] All features disclosed in this specification, except mutually exclusive features, can be combin...

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Abstract

The invention discloses a gas intake bypass channel of a gas engine, relating to a control device of gas intake flow of the gas engine and aiming at solving the technical problem of difficulty in start of the traditional gas engine. The gas intake bypass channel comprises a controller, a mixer, gas intake pipelines, a gas control valve, an air control valve and a bypass pipeline, wherein the bypass pipeline is communicated with the gas intake pipelines arranged at two ends of the gas control valve, and a bypass valve for controlling gas flow is arranged on the bypass pipeline; the diameter of the bypass valve is less than that of the gas control valve; the rear end of the mixer is connected with a turbocharger; the turbocharger is connected with an air cylinder; one air discharge end of the cylinder is provided with an oxygen sensor; the oxygen sensor is used for detecting the oxygen concentration of the discharged gas and transmitting the oxygen concentration numerical value to a controller; the bypass valve is manually operated; and the gas control valve is controlled by the controller to automatically operate; and the bypass valve is used in the starting process. The gas intake bypass channel can be favorably applicable to real-time changes of the gas concentration and the pressure in the starting process of the engine and solves starting difficulty caused by gas source change.

Description

technical field [0001] The invention relates to a gas engine gas intake flow control device, in particular to a gas engine gas intake bypass device. Background technique [0002] Compared with diesel engines and gasoline engines, gas engines are cleaner and more environmentally friendly. They are ideal power generation equipment for power stations, gas stations, coal mines and other industries. There are two main combustion control modes: one is manual control; the other is manual control when starting up, and automatic control after starting up successfully. With the development of control technology, the latter is mostly used now. Its control process is: air and gas enter the mixer to mix after passing through their respective valves, and then are boosted by the turbocharger, and then distributed to each cylinder. Normally, the opening of the air valve is fixed, and the air-fuel ratio is adjusted by controlling the opening of the gas valve. When the engine is started (t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M21/02
CPCY02T10/30
Inventor 于建卫魏勇王飞张红学刘明涛
Owner SICHUAN CRRC YUCHAI ENGINE CO LTD
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