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  2. Exhaust gas recirculation - Wikipedia

    en.wikipedia.org/wiki/Exhaust_gas_recirculation

    EGR valve the top of box on top of the inlet manifold of a Saab H engine in a 1987 Saab 90. In internal combustion engines, exhaust gas recirculation (EGR) is a nitrogen oxide (NO x) emissions reduction technique used in petrol/gasoline, diesel engines and some hydrogen engines. [1]

  3. MAP sensor - Wikipedia

    en.wikipedia.org/wiki/MAP_sensor

    The way they do this is during a deceleration of the vehicle when there is low absolute pressure in the intake manifold (i.e., a high vacuum present in the intake manifold relative to the outside air) the powertrain control module (PCM) will open the EGR valve and then monitor the MAP sensor's values. If the EGR is functioning properly, the ...

  4. On-board diagnostics - Wikipedia

    en.wikipedia.org/wiki/On-board_diagnostics

    Service / Mode $01 shows current sensor live data from PIDs ("Parameter IDs"). See OBD-II PIDs#Service_01 for an extensive list. Service / Mode $02 makes Freeze Frame data accessible via the same PIDs. [33] See OBD-II PIDs#Service_02 for a list. Service / Mode $03 lists the emission-related "confirmed" diagnostic trouble codes stored. It either ...

  5. Toyota NZ engine - Wikipedia

    en.wikipedia.org/wiki/Toyota_NZ_engine

    Early version with the original direct acting valve train mechanism Final version with the rocker arms valve train mechanism The 1NZ-FE Turbo (unofficially called 1NZ-FTE or 1NZ-FET ) is a 1.5 L (1,497 cc) with an air-to-air intercooler turbocharged conventional Otto-cycle variant of the 1NZ-FE with VVT-i , combined with a IHI RHF4 turbocharger ...

  6. Ford Power Stroke engine - Wikipedia

    en.wikipedia.org/wiki/Ford_Power_Stroke_engine

    The 6.4 L also has a DPF and dual EGR coolers which are capable of reducing exhaust gas temps by up to 1,000 degrees before they reach the EGR valve and mix with the intake charge. The DPF traps soot and particulates from the exhaust and virtually eliminates the black smoke that most diesel engines expel upon acceleration. The engine computer ...

  7. Toyota NR engine - Wikipedia

    en.wikipedia.org/wiki/Toyota_NR_engine

    The valve mechanism is equipped with 4-Valves per cylinder, DOHC, and implemented Toyota's Dual VVT-i and VVT-iW. It also uses multi-point or direct fuel injection . The 1NR, 2NR, 3NR, 4NR, 5NR, 6NR, and 7NR engines have Dual VVT-i standard and the 8NR engine has VVT-iW , enabling it to operate in the Otto cycle as well as a modified- Atkinson ...

  8. Mitsubishi 6G7 engine - Wikipedia

    en.wikipedia.org/wiki/Mitsubishi_6G7_engine

    The 2.5-litre 6G73 is a 24-valve SOHC design with two valves running off a single cam lobe on the exhaust valves using a forked rocker arm and each intake valve actuated with two cam lobes, with a smaller bore than the 3.0L version of the same block. Bore and stroke are 83.5 mm × 76 mm (3.29 in × 2.99 in); it is a 60-degree V6 and weighs ...

  9. Cadillac V8 engine - Wikipedia

    en.wikipedia.org/wiki/Cadillac_V8_engine

    While this early effort to match the vacuum-controlled EGR volume more accurately to the engine's load made sense in a conventional engine, it had the effect of causing pinging (detonation) problems in the V8-6-4 engine, because four cylinders operating under higher load needed more EGR, while they were actually producing less exhaust flow and ...

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