Method for driving parameter optimization experiment of high-pressure common-rail high-speed electromagnetic valve

Abstract

The invention discloses a device and a method for driving parameter optimization experiment of a high-pressure common-rail high-speed electromagnetic valve. The device mainly comprises a driving device, a variable pump, a common-rail pipe, an oil injector with a high-speed electromagnetic valve, an oil tank, an oil gauge, a rotational speed sensor, a pressure sensor and a control unit. A block flow diagram of the method can be mainly divided into a driving device portion, an oil-way portion and a circuit portion, the running direction of oil is: the oil tank, the variable pump, the common-rail pipe, the oil injector with the high-speed electromagnetic valve and the oil gauge in the oil-way portion, the control unit forms four information flow channels by the aid of circuits in the circuit portion, and the driving device is connected with the variable pump to drive the variable pump to rotate. By the device and the method for driving parameter optimization experiment of the high-pressure common-rail high-speed electromagnetic valve, rapid reset of the electromagnetic valve can be achieved, rapid on and off and reliable closing of the high-speed electromagnetic valve can be guaranteed, the purpose of oil supply in an engine cylinder in a stable state can be achieved, and electromagnetic valve driving parameters with engineering practical application value is confirmed by taking final stable oil injection quantity as criterion.

Description

technical field [0001] The invention belongs to the technical field of solenoid valve driving, and in particular relates to a driving parameter optimization test method of a high-pressure common rail high-speed solenoid valve. Background technique [0002] In the common rail fuel system, solenoid valve actuation is one of the key technologies that affect the control performance. At present, the more typical one is the driving mode of dual current. [0003] In practical applications, it is necessary to determine the three key parameters of the solenoid valve drive opening current, maintenance current, and opening current duration. The relevant information published at home and abroad mainly involves two methods: the first method is to apply mechanical, electrical, magnetic, The parameters are determined by means of hydraulic integrated simulation modeling software; the second method is to determine the parameters by testing the stroke of the solenoid valve stem. [0004] T...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the two existing methods for determining the key parameters of the solenoid valve drive, the results need to be simulated and corrected, there are many human factors, it is impossible to test with conventional means, and it cannot be applied to the finished product and other problems that need to be improved.

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