Variable nozzle turbocharging control method and system for vehicle engine |
Title： |
| Variable nozzle turbocharging control method and system for vehicle engine |
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Application Number： |
02117418 |
Application Date： |
2002/04/19 |
Announcement Date： |
2002/10/16 |
Pub. Date： |
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Publication Number： |
1374444 |
Announcement Number： |
1162611 |
Grant Date： |
2004-8-18 |
Granted Pub. Date： |
2004-8-18 |
ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
F02D 23/00, F02D 41/26 |
Applicant(s)： |
Tsinghua Univ. |
Inventor(s)： |
Wang Enhua, Ouyang Minggao, Li Jianqiu |
Key Words： |
Variable nozzle, turbocharging control, vehicle engine |
Abstract： |
The present invention relates to electric control system for turbocharging of engine and the variable nozzle turbocharging control method and system features that in the electric control system,target pressure value is obtained through collecting the rotation speed, oil valve position, charging pressure and intake temperature of the engine and judging the working state of the engine. In the system, stepped motor as the executor is connected to the regulating crank of turbine nozzle ring via a link. During the transition course, the nozzle ring opening is regulated to some certain value by the executor through open-loop predication control; and while during stable state, closed-loop digital PID control has the charging pressure signal of intake manifold as controlled target. |
Claim： |
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Priority： |
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PCT： |
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LegalStatus： |
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