Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
METHOD AND DEVICE FOR DETECTING AIR LEAK OF ENGINE AIR INTAKE PIPE
Document Type and Number:
WIPO Patent Application WO/2024/060689
Kind Code:
A1
Abstract:
A method for detecting an air leak of an engine air intake pipe, comprising: determining, according to a system state quantity of an engine, whether an air leak detection condition for an air intake pipeline in front of a throttle valve is satisfied; and if the air leak detection condition for the air intake pipeline in front of the throttle valve is satisfied, acquiring a first flow difference factor, a second flow difference factor, and a gas mixture closed-loop difference factor, and on the basis of the first flow difference factor, the second flow difference factor, and the gas mixture closed-loop difference factor, determining whether there is a suspected air leak to obtain an air leak detection result. Also provided is a device for detecting an air leak of an engine air intake pipe. According to the present invention, air leak states of air intake pipelines in front of throttle valves under different working conditions can be detected, air introduction or leakage can be identified, unstable rotating speed or stalling caused by air leaks of engine air intake pipes is largely avoided, and the robustness of engine systems is improved.

More Like This:
WO/2023/246258GAS DETECTION-BASED ONLINE POSITIONING SYSTEM AND METHOD FOR LEAKING PIPE OF CONDENSER
JP3633803METHOD FOR TESTING AIRTIGHTNESS
JPS56110032INSPECTING METHOD FOR WATER LEAKAGE FROM BURIED PIPE
Inventors:
SUN FEI (CN)
ZHANG YANAN (CN)
YAN BINGCHAO (CN)
ZHONG YUN (CN)
WANG QIAN (CN)
Application Number:
PCT/CN2023/098802
Publication Date:
March 28, 2024
Filing Date:
June 07, 2023
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
UNITED AUTOMOTIVE ELECT SYS CO (CN)
International Classes:
G01M3/28
Domestic Patent References:
WO2006114393A12006-11-02
Foreign References:
CN115597793A2023-01-13
CN107366580A2017-11-21
CN107842432A2018-03-27
JP2010071251A2010-04-02
JPH05163993A1993-06-29
US4999781A1991-03-12
Attorney, Agent or Firm:
SHANGHAI SAVVY INTELLECTUAL PROPERTY AGENCY (CN)
Download PDF:
View/Download PDF      PDF Help



 
Previous Patent: MONITORING METHOD FOR MICRO-CRACKS OF TRANSFORMER

Next Patent: AUTOMATED MACHINE LEARNING MODEL DEPLOYMENT