![]() It is also commonly used as the primary source for the measurement of engine speed in revolutions per minute.Ĭommon mounting locations include the main crank pulley, the flywheel, the camshaft or on the crankshaft itself. This method is also used to "synchronise" a four stroke engine upon starting, allowing the management system to know when to inject the fuel. The crank sensor can be used in combination with a similar camshaft position sensor to monitor the relationship between the pistons and valves in the engine, which is particularly important in engines with variable valve timing. Before electronic crank sensors were available, the distributor would have to be manually adjusted to a timing mark on petrol engines. This information is used by engine management systems to control the fuel injection or the ignition system timing and other engine parameters. Typical inductive crankshaft position sensorĪ crank sensor is an electronic device used in an internal combustion engine, both petrol and diesel, to monitor the position or rotational speed of the crankshaft. ![]()
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