Electronic Valve Control Engine

Electronic valve timing control basic description.

Electronic valve control engine.

The ecm is a type of electronic control unit ecu which is an embedded system that employs software to determine the required throttle position by calculations from data measured by other sensors including the accelerator pedal position sensors engine speed sensor vehicle speed sensor and cruise control switches. The engine control module ecm also known as the engine control unit ecu monitors a vast network of sensors and actuators in your vehicle s engine bay. It does this by reading values from a multitude of sensors within the engine bay interpreting the data using multidimensional performance maps called lookup tables. Camshafts normally have one lobe per valve with a fixed valve duration and lift.

The valves in an internal combustion engine open and close to allow both the fuel air mixture to enter the cylinder prior to combustion and to allow the exhaust gases to exit the cylinder after combustion. What that does is give completely independent control over each cylinder and each valve. A camless or free valve piston engine is an engine that has poppet valves operated by means of electromagnetic hydraulic or pneumatic citation needed actuators instead of conventional cams actuators can be used to both open and close valves or to open valves closed by springs or other means. An engine control unit ecu also commonly called an engine control module ecm is a type of electronic control unit that controls a series of actuators on an internal combustion engine to ensure optimal engine performance.

In most engines the valves are opened by lobes connected to the camshaft. If you have four valves sometimes it only opens two. Without variable valve timing or variable valve lift the valve timing is the same for all engine speeds and conditions. Electronic controled valves would see an improvement in engine performance and drivability as the article suggests but rather then focusing on the reasons why it can t work.

Depending on your car your engine control module might have other functions including idle speed control electronic valve control and variable valve timing vvt control. British company camcon automotive has built the first fully electronic engine valve system uncoupled from the crankshaft that offers unprecedented control over the combustion cycle. On top of. You can t do that with a regular camshaft since the.