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Indirect injection in an internal combustion engine is fuel injection where fuel is not directly injected into the combustion chamber. Gasoline engines equipped with indirect injection systems, wherein a fuel injector delivers the fuel at some point before the intake valve , have mostly fallen out of favor to direct injection .
The fuel is injected only into the pre-chamber (where it begins to combust), and not directly into the main combustion chamber. Therefore, this principle is called indirect injection. There exist several slightly different indirect injection systems that have similar characteristics. [22] Types of indirect injection used by diesel engines include:
These engines use an injection pump that is entirely mechanical, as was the standard for diesels of the day. The fuel system also utilizes indirect injection which made it quieter than mechanically direct injected engines. Both displacements use the Stanadyne DB-2 injection pump fed by a cam-driven lift pump.
2.5 L; 152.2 cu in (2,494 cc) inline-5, with two (pushrod-actuated) valves-per-cylinder and indirect fuel injection from either Bosch or Spica. 88 mm × 82 mm (3.46 in × 3.23 in). This engine is a five-cylinder version of the 2-litre HR488, and also uses KKK turbochargers. Applications:
The 1KZ-TE also adopts the electronically controlled fuel injection, ETCS-i (Electronic throttle control System - intelligent) technology which is similar in basic construction to a modern gasoline injector, although using considerably higher injection pressures, it is an indirect injection engine which gives it a significant efficiency and ...
- The number 1 (one) before the number of the engine model means that the engine uses direct injection, otherwise, indirect injection - The F letter after the B letter means that the engine is multivalvular. Since the B family are inline-fours, that means that the engine uses 16 valves. - The T letter, means that the engine is turbocharged
It is related (through several evolutions of engine families) to the EA827 series, indirect-injection diesels, 16 valves, and five-cylinder gasoline engines. Naturally aspirated direct-injection variants are known as Suction Diesel Injection, abbreviated to SDI.
The Mercedes-Benz OM606 is a 3.0 litres (2,996 cc) inline-six cylinder (R6/I6) double overhead camshaft (DOHC) diesel engine with indirect injection manufactured by Mercedes-Benz between 1993 and 2001. It replaced the single overhead camshaft (SOHC) OM603 engine.
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