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Testing device of variable valve system and testing method thereof

A test device and valve technology, which is applied in the direction of internal combustion engine testing, etc., can solve problems such as detection of key structural parameters that do not have variable valve lift devices, and achieve the effect of ensuring work reliability and accuracy

Inactive Publication Date: 2014-12-10
成都科林沃德动力科技有限公司
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Problems solved by technology

[0003] This patent only judges the fault of the variable valve lift device from the single vibration signal generated when the valve is closed, and does not have the ability to detect the key structural parameters of the variable valve lift device and its influence on the valve timing

Method used

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  • Testing device of variable valve system and testing method thereof
  • Testing device of variable valve system and testing method thereof

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Embodiment Construction

[0021] The device is mainly composed of three parts: the drive system of the gas distribution mechanism, the data acquisition system and the electronic control system.

[0022] figure 1 Among them, 1-platform frame; 2-FM motor; 3-coupling; 4-camshaft; 5-cylinder head; 6-variable valve lift mechanism; 7-photoelectric encoder; 8-oil filter; 9-solenoid valve; 10-accumulator; 11-overflow valve; 12-oil pump; 13-motor; 14-data acquisition system; 15-heater; 16-mail box; 17-electric control unit. Among them, T is the temperature; P is the pressure; S is the displacement; n is the rotational speed.

[0023] see figure 1 , a test device for a variable valve system, including a data acquisition system connected to an electronic control system, and a valve mechanism drive system installed on a platform frame 1: the motor is connected to the oil pump, and the inlet of the oil pump is connected to the oil outlet of the oil tank through a pipeline , the outlet of the oil pump is connecte...

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Abstract

The invention relates to a testing device of a variable valve system and a testing method thereof. The testing device is characterized in that a valve mechanism driving system is arranged on a platform. A motor is connected with an oil pump, an inlet of the oil pump is connected with a sump, and an outlet of the oil pump is connected with an overflow valve, an energy accumulator and an oil inlet pipe of a solenoid valve in sequence. An overflow port of the overflow valve is communicated with the sump. A first outlet of the solenoid valve is communicated with a hydraulic piston cylinder arranged in a variable valve lifting mechanism, and a second outlet of the solenoid valve is communicated with the sump. The testing device can not only research the law of the impact of key structural parameters of the variable valve system on valve timing but also calibrate and optimize all structural parameters and perform cold running-in tests on key parts so as to ensure work reliability of the parts and provide a convenient and reliable testing platform for the variable valve system.

Description

technical field [0001] The invention relates to a test device for a variable valve system of an engine, in particular to an experimental test device for calibrating and optimizing key structural parameters of the variable valve system and performing cold running-in of key components. Background technique [0002] Chinese patent document CN201210592547.6 (applicant: Korea Hyundai Automobile Co., Ltd.) discloses a "system and method for detecting faults of variable valve lift devices", the system includes an engine, the engine is set There is a variable valve lift device to control the lift of the valve; vibration sensor: used to detect the vibration generated when the above valve is closed and output a corresponding vibration signal; and the control part: receive the vibration signal, according to the predetermined crank angle The vibration signal detected inside determines the fault of the variable valve lift device. [0003] This patent only judges the fault of the variabl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M15/05
Inventor 韩志强田维潘锁柱吴学舜韩伟强
Owner 成都科林沃德动力科技有限公司
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