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fully demand-controlled and returnless: fuel tank-mounted low-pressure fuel lift pump; Fuel Stratified Injection (FSI): single-piston high-pressure injection pump supplying up to 122 bar (1,770 psi) fuel pressure in the stainless steel common rail fuel rail, five combustion chamber sited direct injection sequential solenoid-controlled fuel ...
A Digifant II DF-1 Engine Control Unit used in '91 Volkswagen Golf Cabriolet with 2E engine. Digifant is an Engine Management System operated by an Engine Control Unit that actuates outputs, such as fuel injection and ignition systems, using information derived from sensor inputs, such as engine speed, exhaust oxygen and intake air flow. [1]
fully demand-controlled and returnless; fuel tank–mounted low-pressure fuel pump; Fuel Stratified Injection (FSI): two-inlet double-cam–driven single-piston high-pressure injection pumps maintaining a pressure of 30 to 100 bar (435 to 1,450 psi) in the two stainless steel common fuel distribution rails (one rail per cylinder bank), six ...
low-pressure fuel tank mounted fuel lift pump with underfloor electric fuel relay pump, timing belt-driven high-pressure injection pump delivering up to 1,850 bar (26,830 psi) pressure for the common rail (CR) fuel rail, direct injection (DI) with eight-nozzle output piezo fuel injectors; Bosch EDC 17 electronic engine control unit (ECU ...
Second big problem: GM's cost-cutters decided not to fit a water separator. Unlike gasoline, diesel fuel is subject to water condensation – hence the need for a water separator. Without one, water in the fuel becomes water in the engine, where it can rust either the cylinders or the complicated mechanical fuel injection pump.
Currently, all diesel engines offered by Volkswagen Group are direct injection (DI). This engine started as a straight-five-cylinder Audi diesel in 1989 (itself derived from the EA827 series), but got reduced to an inline-four-cylinder for Volkswagens use.
On 30 September 2011, Volkswagen of America announced a recall involving 2009–2012 Jetta and Jetta Sportwagen models with the 2.0L TDI engine; this recall pointed to a resonance condition with the number 2 fuel injector line and the fuel injector pulses, causing small cracks in the line which could leak.
Vapor lock is a problem caused by liquid fuel changing state to vapor while still in the fuel delivery system of gasoline-fueled internal combustion engines.This disrupts the operation of the fuel pump, causing loss of feed pressure to the carburetor or fuel injection system, resulting in transient loss of power or complete stalling.
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