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Method and device for diagnosing and testing switch electromagnetic valve running-in for electric controlled diesel engine

A technology for switching solenoid valves and diagnostic testing, which is applied to valve devices, program control devices, valve operation/release devices, etc., can solve the problems of time-consuming, labor-intensive, inconvenient, etc., and achieves improved work reliability, convenient installation, and easy promotion. effect used

Inactive Publication Date: 2003-10-22
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The usual running-in work is carried out on the oil pump test bench, and the solenoid valve needs to be installed on the fuel injection pump, which requires long-term operation of the oil pump bench, which is time-consuming and laborious, and is very inconvenient

Method used

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  • Method and device for diagnosing and testing switch electromagnetic valve running-in for electric controlled diesel engine
  • Method and device for diagnosing and testing switch electromagnetic valve running-in for electric controlled diesel engine
  • Method and device for diagnosing and testing switch electromagnetic valve running-in for electric controlled diesel engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0041] The high-speed and powerful solenoid valves are sequentially connected between S and S1-S6 of the interface harness of the electronic control unit, and the 24V power supply is connected with the power line of the electronic control unit. The power supply can be a 24V storage battery for a vehicle, or a 24V regulated power supply with a power greater than 100V. The COM port of the monitoring computer is connected with the electronic control unit through the interface communication harness.

[0042] During on-board inspection, the test device is placed in the cab and connected to the high-speed powerful solenoid valve on the engine through a wire harness. For the newly produced solenoid valve, the device works independently from the oil pump test bench, cooperates with the debugging and assembly process of the high-speed powerful solenoid valve, and can also perform the running-in work of the installed high-speed powerful on-off solenoid valve.

[0043] Working process o...

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PUM

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Abstract

The invention is run-in tester and the method for switching electrical-magnetism valve in electrical controlled diesel engine; it refers to the run-in and malfunction testing of high-speed punchy electrical-magnetism valve in electrical controlled fuel ejecting system of diesel machine. The invention includes monitoring computer, electrical controlling unit and the power. The electrical controlling unit receives the order of monitor procedure from the computer, and drives the valve according to the fixed sequence. The hardware circuit tests the current valve of the coil in valve, the valve istransmitted to the singlechip. The control procedure calculates the switch time and the particular current valve of the valve and judges the valve is abnormal or not, and transmits the result to the computer to display. The device is convenient.

Description

technical field [0001] The invention relates to the running-in and fault detection of a high-speed powerful switch solenoid valve in an electronically controlled fuel injection system of a diesel engine for a vehicle, in particular to the running-in and fault detection of a high-speed powerful solenoid valve in an electronically controlled pump nozzle fuel injection system for a diesel engine used in a vehicle. The running-in of the newly produced high-speed switching solenoid valve and the diagnostic test of the high-speed switching solenoid valve installed on the engine are realized through the electronic controller and its control software. Background technique [0002] The working conditions of the high-speed switching powerful solenoid valve on the engine are relatively harsh. The solenoid valve that controls the fuel injection of each cylinder opens and closes once for one revolution of the engine. It needs to withstand the impact of high-frequency pulse current and mec...

Claims

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Application Information

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IPC IPC(8): F16K31/06G06F9/44
Inventor 王恩华李建秋周明欧阳明高
Owner TSINGHUA UNIV
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