3.4 Other Relevant Engine Control [1] EGR Control (1) Control System ECU EGR Target Opening Final EGR Target Opening Calculation Processing/Duty Ratio Calculation EGR Deviation Compensation Control EGR Valve Lift Sensor (Detects Actual Opening) EGR Valve Actuation Feed Back EGR Valve Assy Q000267E (2) Related Sensors The related sensors are as follows: • Air volume sensor: Detects the volume of air flowing into the engine. • Coolant temperature sensor: Detects the engine coolant temperature. • Atmospheric pressure sensor: Detects the atmospheric pressure around the engine (built into the ECU). (3) EGR Valve a.
An EGR valve is utilized as the system actuator for the electric exhaust gas recirculation (E-EGR) system. It is constructed of an upper section and a lower section. The upper section receives output signals from the engine ECU, and contains a solenoid that generates electromagnetic force. The lower section is constructed of a nozzle that moves up and down in response to the electromagnetic force, and a valve with an opening that alters in response to the nozzle position. For J05D For J08E Q000268E Q000281E 36