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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 .
2.5 L; 152.5 cu in (2,499 cc) straight-4, with four valves-per-cylinder and common-rail direct fuel injection. Also available with variable geometry turbocharger (VGT) with upgraded power output of 163 PS (120 kW; 161 hp). [19] Applications: 2001–2007 Chrysler Voyager Manual power: 141 hp (105 kW; 143 PS); torque: 340 N⋅m (251 lb⋅ft)
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.
The TUD was the diesel variant. An indirect injection diesel with mechanical pump (Bosch or Lucas variants depending on model and year). It initially used the alloy cylinder block of the TU3 with stronger wet liners. This was thus called TUD3. This engine was particularly prone to early head gasket failure.
An indirect diesel injection system (IDI) engine delivers fuel into a small chamber called a swirl chamber, precombustion chamber, pre chamber or ante-chamber, which is connected to the cylinder by a narrow air passage. Generally the goal of the pre chamber is to create increased turbulence for better air / fuel mixing.
Although electronic fuel injection systems had long been used in gasoline engines, this is among the first diesel engine to adopt such a system. [citation needed] The electronic system (called "EFI" by Toyota) meters fuel with great precision and increased the engine's efficiency. It works through a combination of multiple sensors similar to ...
The 4BD2T is an indirect injection version of the 4BD1T that was also intercooled, it replaced the 4BD1T in the US market until 1998. 100 kW (136 PS) at 3000 rpm 345 N⋅m (254 lb⋅ft) at 2000 rpm 4BE1 The 4BE1 is a 3.6L direct injection engine. It is a high revving high output diesel on its VE-Rotary Zexel injection pump.
The 1KZ-T is a version of the KZ series engine that used a fully mechanical injector pump instead, 3.0 L (2,982 cc), 4 cylinders, SOHC, 2 valve per cylinder turbo diesel engine. Compression ratio remains the same at 21.2:1. Maximum output is 123 hp (92 kW; 125 PS) at 3600 rpm and maximum torque is 296 N⋅m (218 lb⋅ft) at 2000 rpm. [1]
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