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A crank sensor (CKP) [1] [2] [3] is an electronic device used in an internal combustion engine, both petrol and diesel, to monitor the position or rotational speed of the crankshaft. This information is used by engine management systems to control the fuel injection or the ignition system timing and other engine parameters.
A tachometer (revolution-counter, tach, rev-counter, RPM gauge) is an instrument measuring the rotation speed of a shaft or disk, as in a motor or other machine. [1] The device usually displays the revolutions per minute (RPM) on a calibrated analogue dial, but digital displays are increasingly common.
MAP sensor data can be converted to air mass data by using a second variable coming from an IAT Sensor (intake air temperature sensor). This is called the speed-density method. Engine speed (RPM) is also used to determine where on a look up table to determine fuelling, hence speed-density (engine speed / air density).
Oil level sensor; Oil pressure sensor; Omniview technology; Oxygen sensor (O 2) Parking sensor; Radar gun; Radar sensor; Speed sensor; Throttle position sensor; Tire pressure sensor; Torque sensor; Transmission fluid temperature sensor; Turbine speed sensor; Variable reluctance sensor; Vehicle speed sensor; Water-in-fuel sensor; Wheel speed ...
As the RPM of the engine increases, the throttle plate in the carburetor is gradually closed, reducing the amount of fuel and air admitted to the engine, until the engine RPM is stable. If RPM drops below the desired value, the throttle plate will automatically open, admitting more fuel/air mix to the engine.
The TPS sensor along with the vehicle speed sensor are the two main inputs for most TCUs. Older transmissions use this to determine engine load, with the introduction of drive-by-wire technology, this is often a shared input between the ECU and TCU. The input is used to determine the optimum time and characteristics for a gear change according ...
It is usually connected to a computer that records applied braking torque and calculates engine power output based on information from a "load cell" or "strain gauge" and a speed sensor. An 'inertia' dynamometer provides a fixed inertial mass load, calculates the power required to accelerate that fixed and known mass, and uses a computer to ...
Tachometer - A gauge to indicate engine speed in RPM or percentage of maximum. Manifold pressure (MP) gauge - Indicates the absolute pressure in the intake manifold. For an aircraft equipped with a constant speed propeller, this is the most direct indication of the engine's operating power.