A large Ci engine operating at 310 RPM has open combustion c

A large Ci engine operating at 310 RPM has open combustion chambers and direct injection, with 26-cm bores, a 73-cm stroke, and a compression ratio of 16.5:1.Fuel injection in each cylinder starts at 21degrees bTDC and lasts for 0.019 second. ID is 0.0065 second. Calculate: ID in degrees of engine rotation. Crank angle position when combustion starts. Crank angle position when injection stops.

Solution

A crank sensor is an electronic device used in an internal combustion engine 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. Before electronic crank sensors were available, the distributor would have to be manually adjusted to a timing mark on the engine.

The crank sensor can be used in combination with a similar camshaft position sensor to monitor the relationship between the pistons andvalves in the engine, which is particularly important in engines with variable valve timing. This method is also used to \"synchronise\" a four stroke engine upon starting, allowing the management system to know when to inject the fuel. It is also commonly used as the primary source for the measurement of engine speed in revolutions per minute.

Common mounting locations include the main crank pulley, the flywheel, the camshaft or on the crankshaft itself. This sensor is the most important sensor in modern day engines. When it fails, there is a chance the engine will not start, or cut out while running