There exist several different varieties of both direct and indirect injection systems the most common internal mixture formation fuel injection system is the common-rail injection system, a direct injection system. Internal mixture formation systems can be separated into direct and indirect injection systems. There exist two types of manifold injection systems: multi-point injection (or port injection) and single-point injection (or throttle body injection). A fuel injection system that uses external mixture formation is called a manifold injection system. There are two main functional principles of mixture formation systems for internal combustion engines: internal mixture formation, and external mixture formation. Typically, the only thing in common all fuel injection systems have is a lack of carburetion. The term 'fuel injection' is vague and comprises various distinct systems with fundamentally different functional principles. The primary difference between carburetion and fuel injection is that fuel injection atomizes the fuel through a small nozzle under high pressure, while a carburettor relies on suction created by intake air accelerated through a Venturi tube to draw fuel into the airstream. In passenger car petrol engines, fuel injection was introduced in the early 1950s and gradually gained prevalence until it had largely replaced carburettors by the early 1990s. Mass-produced diesel engines for passenger cars (such as the Mercedes-Benz OM 138) became available in the late 1930s and early 1940s, being the first fuel injected engines for passenger car use. petrol engines, such as Otto or Wankel), use fuel injection of one kind or another. diesel engines), and many spark-ignition engines (i.e. This article focuses on fuel injection in reciprocating piston and Wankel rotary engines.Īll compression-ignition engines (e.g. A cutaway model of a petrol direct-injected engineįuel injection is the introduction of fuel in an internal combustion engine, most commonly automotive engines, by the means of an injector.

Tbi injector specs