Gasoline engine direct injection type fuel injector performance detecting system

Abstract

The invention relates to a gasoline engine direct injection type fuel injector performance detecting system. The gasoline engine direct injection type fuel injector performance detecting system comprises an experimental liquid pressure stabilizing and holding device, an experimental liquid pressure adjusting and driving device, an experimental liquid temperature adjusting device, an experimental liquid supplying device, a fuel injector installing device, an experimental constant volume device and a control system, wherein the experimental liquid pressure stabilizing and holding device is a constant temperature and constant press tank body and provided with five ports, namely, a nitrogen pressure input port, an experimental liquid supplying port, an experimental liquid output port, a temperature controlling input port and a temperature controlling output port, a pressure sensor, a temperature sensor and a liquid level sensor are arranged in the tank body, the nitrogen pressure input port is connected with the experimental liquid driving device, the experimental liquid supplying port is connected with the experimental liquid supplying device, the experimental liquid output port is connected with the fuel injector installing device which is connected with the experimental constant volume device, the experimental liquid adjusting and driving device is connected with the experimental constant volume device, and the temperature controlling input port and the temperature controlling output port are connected with the experimental liquid temperature adjusting device to form a loop.

Description

technical field [0001] The invention belongs to the technical field of engines, and relates to a gasoline engine direct-injection fuel injector, in particular to a gasoline engine direct-injection fuel injector performance detection system. Background technique [0002] With the increasingly stringent automobile emission regulations at home and abroad, higher requirements are put forward for engine electronically controlled injection technology. Since the fuel injector is the core component of engine fuel atomization, the performance of the fuel injector has a great influence on the engine power, Economical, emission, etc. have a decisive impact. In order to standardize and guide the production of fuel injectors, my country has promulgated "GB / T 25362-2010 Gasoline Engine Solenoid Valve Injector Assembly Technical Conditions" and "GB / T 25363-2010 Gasoline Engine Solenoid Valve Injector Assembly Test Method" two national recommended standards. Although our country promulgate...

AI Technical Summary

Problems solved by technology

Although my country has promulgated performance testing standards for fuel injectors, there is a lack of corresponding systems for comprehensive and accurate detection of low-pressure solenoid valve fuel injectors.

[0003] At present, most domestic auto parts manufacturing and auto maintenance industries still generally adopt relatively simple fuel injector test methods. There is a big difference in the performance of the fuel injectors, and even the fuel injectors that do not meet the requirements of the regulations are still in use, and the diameter affects the performance of the engine

Compared with China, foreign direct-injection injector detection regulations were released earlier, but the research on steam direct-injection injector detection is still immature

[0004] The existing fuel injector cleaning devices in the domestic market can only measure the fuel injection volume simply, and the error is relatively large. It is mainly used to eliminate faults such as fuel injector clogging, and cannot meet the needs of accurate detection of fuel injector performance.

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