Mash Dirt Track 650, Руководство пользователя

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VII. Engine Management System
The Engine Management System (EMS) is comprised of the following components: Electronic control unit (ECU), throttle body, Idle speed control valve,
fuel pump, fuel injector, ignition coil, O2 sensor, throttle position sensor, T-MAP sensor, cylinder head temperature sensor, etc.
The EMS uses sensors to collect parameters such as air flow, temperature of inlet air, cylinder head temperature, atmospheric pressure and the
operational state of engine (rpm, load, acceleration and deceleration). All parameters are transferred to the ECU via electronic signal. The ECU outputs
control signals after the input signals have been processed. Based on the air flow and engine speed, the fuel injector and ignition coil are controlled by
ECU to get the optimal combustible mixture of fuel and air and Ignition timing which meet all engine operating conditions.
Through the engine and actuator components on the vehicle (ignition coil, fuel injector, idle speed control valve and so on), the fuel and spark are
precisely controlled and corrected with closed loop.
System composition:
1. Sensors:
•
Intake air pressure sensor (load information) intake air
temperature and pressure sensors
•
Throttle position sensor (load information, load range
information, acceleration / deceleration information)
•
Engine speed sensor (speed information, crankshaft
position)
•
Intake air temperature sensor (air density information)
•
Oxygen sensor (information of the excess air coefficient
is more than 1 or less than 1)
2. Actuators:
• Fuel pump relay,
• Fuel pump
• Fuel injector (fuel supply)
• Ignition coil
• High-tension cord
• Spark plug (ignition)
• Throttle, Idle speed control valve (air intake)
3. Electronic control unit
• ECU