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1. 发明申请

US20210156341A1 PRESSURE STABILIZER, A GAS ENGINE SYSTEM AND A GAS PRESSURE CONTROL METHOD 有权
公开(公告)号：US20210156341A1
公开(公告)日：2021-05-27
申请号：US17003144
申请日：2020-08-26
申请人： Weichai Power Co., Ltd.
发明人： Xuguang TAN , Wang LI
IPC分类号： F02M21/02 , F02D19/02
摘要： The present disclosure relates to a pressure stabilizer, a gas engine system and a gas pressure control method. The pressure stabilizer includes: a housing, which comprises a gas intake chamber and a piston chamber, wherein a spacer is provided between the gas intake chamber and the piston chamber, and the spacer is provided with a spacer through hole; a piston, which is slidably disposed in the piston chamber and which is provided therein with a piston through hole passing through the piston; a spring disposed in the piston chamber, wherein the spring is disposed between the piston and the spacer; a gas outlet end cap, which is disposed at an open end of the piston chamber and which is provided with a gas outlet; and an electromagnetic coil, which is disposed at an end of the gas outlet end cap that is close to the piston, wherein the electromagnetic coil generates a magnetic field force for attracting the piston in an energized state, so as to attract the piston to approach the gas outlet end cap.

2. 发明申请

US20200309050A1 GAS CONTROL SYSTEM AND GAS CONTROL METHOD OF OFF-ROAD GAS ENGINE 审中-公开
公开(公告)号：US20200309050A1
公开(公告)日：2020-10-01
申请号：US16765576
申请日：2018-06-29
申请人： Weichai Power Co., Ltd.
发明人： Shuaiqing XU , Xuebin WANG , Feng XIE , Wang LI
IPC分类号： F02D41/00 , F02M21/02
摘要： A gas control system of a non-road gas engine and a gas control method thereof are disclosed by the present disclosure. The gas control system includes a mixer, the mixer is provided with an air inlet, a gas inlet and a mixed gas outlet respectively, the air inlet is provided with a first pressure sensor, the gas inlet is provided with a second pressure sensor and a pressure regulating valve that are spaced apart, and the mixed gas outlet is provided with a third pressure sensor; the first pressure sensor, the second pressure sensor, the pressure regulating valve and the third pressure sensor are respectively electrically connected to a controller, and the controller controls an opening degree of the pressure regulating valve according to pressure information fed back by the first pressure sensor, the second pressure sensor and the third pressure sensor so as to adjust an air-gas ratio of the mixed gas. The system has a simple structure. By disposing a pressure regulating valve at the gas inlet, the pressure of the gas entering the mixer is controlled, and the air-gas ratios required under various working conditions are controlled, which realizes a closed-loop control so that a control range of the air-gas ratio is smaller, the accuracy is higher, and a transient response speed of the engine is improved.

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