CAC Gasoline Engine Maintenance And Servicing Manual
81
According toλsensor signal, ECU will automatically revise C0 parameter(close loop). When λsensor
fails, ECU may work under open loop.
2. Single Port Injection System Throttle Valve “30MM12”
“30MM12” throttle valve is one of the main system parts. Most sensors and actuators are assembled in the
throttle valve. Throttle valve features small accessories, compact structure, and an bran-new inner geometry
structure to better the fuel atomization from fuel injector and get the most proper mixture for optimizing
engine performance. Throttle valve is installed on intake manifold.
Throttle valve casting are consisted of upper and lower bodies. Upper body(cap) is for arranging fuel
passages, and the lower body is for controlling engine air intake volume. Fig. 136 indicates the throttle valve
structure.
2.1 Upper body(fuel system)— description and function of accessories
A/C signal
Intake temperature sensor
Water temperature sensor
Active diagnose
Fig. 135 The control-illustration for single Port Injection System
Pressure adjuster
intake temperature sensor
oil injector
Upper body
fuel intake
hot water connector
recirculate solenoid
Lower body
Fig. 136 throttle valve structure
throttle valve position sensor
idle actuator
hot water connector
return fuel valve
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.com.cn
To Next Page
Loading...
