What does the crank position sensor tell the ECU?
The Crank Position Sensor, or CPS, is the single most important sensor in the engine management system. It tells the ECU how fast the engine is turning, and if the ECU doesn’t have that information then it will not activate the Fuel or Ignition circuits.
What are the inputs and outputs of the ECU?
Inputs & Outputs _ Explained 1. ECU Engine Control Unit Inputs & Outputs By: Kamel Elsayed 2. MAP sensor المنفولد ضغط حساس • The manifold absolute pressure sensor (MAP sensor) is one of the sensors used in an internal combustion engine’s electronic control system. • Engines that use a MAP sensor are typically fuel injected.
What is the resistance of an ECT sensor?
The ECT sensor is shown on fig. 1. Fig. 1 In order to convert the ECT resistance variation to voltage variation, which is further processed by the ECU, the ECT sensor is connected in a circuit typically supplied with a reference voltage of +5V. In cold engine and an ambient temperature of 20 ºC the sensor resistance is between 2000Ω and 3000Ω.
What kind of crank position sensor does an E30 have?
The E30 was fitted with two types of Crank Position Sensor during its lifetime. Earlier models with either Jetronic or Motronic 1.0 engine management were fitted with two sensors, which read pulses from the flywheel at the back of the engine.
The Crank Position Sensor, or CPS, is the single most important sensor in the engine management system. It tells the ECU how fast the engine is turning, and if the ECU doesn’t have that information then it will not activate the Fuel or Ignition circuits.
How does the coolant sensor resistance affect the ECU?
The two series resistances form a voltage divider, so if they are equal, the voltage fed to the ECU would be about one-half of 5V, or 2.5V. Usually, the coolant sensor resistance decreases with increasing temperature (Neg tempco), so as the engine gets hotter, the voltage to the ECU decreases.
How are the senses used in an ECU?
In an electronic control system, the ECU uses its sensors in much the same manner as we use our five senses. Our sense of touch tells us when things are hot or cold; our sense of hearing allows us to distinguish one sound from another; our sense of smell tells us when fresh coffee is brewing somewhere nearby.
Is the ECU the same as the engine control unit?
The use of the term ECU may be used to refer to an Engine Control Unit, however ECU also refers to an Electronic Control Unit, which is a component of any automotive mechatronic system, not just for the control of an engine. In the Automotive industry, the term ECU often refers to an Engine Control Unit (ECU), or an Engine Control Module (ECM).