Engine Sensors provide the correct amount of fuel for every operating condition, the car e­ngines engine control unit (ECU) has to monitor a huge number of input sensors. Here are just a few:

* Mass airflow sensor
* Oxygen sensor(s)
* Throttle position sensor
* Coolant temperature sensor
* Voltage sensor
* Manifold absolute pressure sensor
* The amount of air being drawn into the engine is a good indication of how much power it is producing; and the more air that goes into the engine, the lower the manifold pressure, so this reading is used to gauge how much power is being produced.
* Engine speed sensor

There are two main types of control for multi-port systems: The fuel injectors can all open at the same time, or each one can open just before the intake valve for its cylinder opens (this is called sequential multi-port fuel injection).

The advantage of sequential fuel injection is that if the driver makes a sudden change, the system can respond more quickly because from the time the change is made, it only has to wait only until the next intake valve opens, instead of for the next complete revolution of the engine.

The newer SIDI Spark Ignition Direct Injection systems are excellent at supplying the driver with instant performance with optimal gas mileage. Since this system is so popular in foreign cars, it has been developed quite heavily for the American car market.

Chevrolet introduced its new and most powerful Ecotec 2.0-liter direct injection turbo engine in the 2007 Saturn Sky Red Line with tremendous sucess. The engine is now popular in all of the General motors cars.

One of the advanced and fuel-efficient North American powertrains is the Ford Focus’ all-new normally aspirated 2.0-liter direct fuel injection engine, the first of its kind in a Ford vehicle in North America.

More to come on the newest and most interesting fuel systems being developed for better performance and economy out of a smaller engine. GotEngines.com is your top level engine supplier, call us at 1-888-344-8044.