Vehicle air throttle air inflow test system and testing method

A throttle body and testing system technology, applied in mass flow measurement devices, indirect mass flow meters, fluid flow detection using thermal effects, etc., can solve problems such as uneconomical and inconvenient, high process requirements, complex structure, etc., and achieve convenience The effect of low purchase and comprehensive cost and simple test structure
CN1932453AInactive Publication Date: 2007-03-21BYD CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BYD CO LTD
Publication Date
2007-03-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an air input testing system and testing method of the motor car air throttle which includes the vacuum source, the pressure sensor, the thermal gas flowmeter and the control unit. The vacuum source includes the air guiding hollow connected with the air vent of the throttle which provides the vacuum condition for the air vent; the control unit can keep the vacuum degree in a stable error range and collect the flow rate signal outputted by the thermal gas flowmeter and compute the air flow according to the airflow sectional area. The invention can measure the air flow directly and has the simple structure and low cost.
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Description

【Technical field】

[0001] The invention relates to a bench test system and a test method for the intake air volume of a throttle body under different working conditions in an automobile air intake system, in particular to the test of the air intake volume of a throttle body under the conditions of different openings of bypass passages during simulating vehicle idling systems and test methods. 【Background technique】

[0002] At present, most throttle body manufacturers mainly use the method of measuring the gas flow rate with a sonic nozzle when performing a bench test on the intake air volume of the throttle body. Although this method has the advantages of high precision and good repeatability, but the structure is complex, and when measuring the air leakage (about 0.5g / s) of the fully closed idle channel, it is necessary to use the flow rate less than 0.1g / s under critical conditions. Nozzles, because this kind of nozzles require high technology and are expensive, there are...

Claims

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