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  2. Oil pressure - Wikipedia

    en.wikipedia.org/wiki/Oil_pressure

    Murphy oil pressure gauges with switches that activate on low pressure. Oil pressure is an important factor in the longevity of most internal combustion engines. [1] With a forced lubrication system (invented by Frederick Lanchester), oil is picked up by a positive displacement oil pump and forced through oil galleries (passageways) into bearings, such as the main bearings, big end bearings ...

  3. Crankcase ventilation system - Wikipedia

    en.wikipedia.org/wiki/Crankcase_ventilation_system

    These blow-by gases, if not ventilated, inevitably condense and combine with the oil vapor present in the crankcase, forming oil sludge. Excessive crankcase pressure can furthermore lead to engine oil leaks past the crankshaft seals and other engine seals and gaskets. Therefore, it becomes imperative that a crankcase ventilation system be used.

  4. Nissan QG engine - Wikipedia

    en.wikipedia.org/wiki/Nissan_QG_engine

    The QG engine is a 1.3 L (1,295 cc), 1.5 L (1,497 cc), 1.6 L (1,597 cc) and 1.8 L (1,769 cc) straight-4 piston engine from Nissan. It is a lean-burn aluminum DOHC 4-valve design with variable valve timing and optional NEO Di direct injection. The QG engines were designed by Nissan's Aichi Kikai division [1] in Japan.

  5. Hydraulic tappet - Wikipedia

    en.wikipedia.org/wiki/Hydraulic_tappet

    Oil under constant pressure is supplied to the lifter via an oil channel, through a small hole in the lifter body. When the engine valve is closed (lifter in a neutral position), the lifter is free to fill with oil. As the camshaft lobe enters the lift phase of its travel, it compresses the lifter piston, and a check valve shuts the oil inlet ...

  6. Nissan YD engine - Wikipedia

    en.wikipedia.org/wiki/Nissan_YD_engine

    It is equipped with a variable geometry turbocharger (Garrett GT2056V). The common rail versions of this engine are referred to in Europe as DCi. The common rail engines are used in the D40 Navara, late model D22 Navara and the R51 Pathfinder. YD25DDTi High Power was developed in 2005 for the Nissan Navara (D40) and the Nissan Pathfinder (R51 ...

  7. Nissan VVL engine - Wikipedia

    en.wikipedia.org/wiki/Nissan_VVL_engine

    This engine was used by Nissan from 1997 to 2001. It is found in the Nissan Primera, Nissan Bluebird, and the Nissan Wingroad. The second variant of the SR20VE is found only in the 2001 and later P12 Nissan Primera. This version of the SR20VE makes 204 hp (152 kW), and 152 lb⋅ft (206 N⋅m) torque. This engine is commonly known as the SR20VE ...

  8. Nissan VQ engine - Wikipedia

    en.wikipedia.org/wiki/Nissan_VQ_engine

    The engine was used in the 2000–2001 Nissan Maxima and adds a true dual-runner intake manifold for better high-end performance compared to some earlier Japanese and Middle-East market versions of this engine (2000-2001 Infiniti I30 models added an additional fenderwell intake, boosting power to 230 PS (227 hp; 169 kW)). The VQ30DEK produces ...

  9. Nissan TD engine - Wikipedia

    en.wikipedia.org/wiki/Nissan_TD_engine

    Nissan revised the piston design to accommodate the forced induction by adding extended oil squirters and oil cooling the pistons. Crankshafts were also updated to suit turbo engines. The fuel pumps were upgraded to an 11mm plunger style on these models to handle the increase of fuel supply needed for the turbo application.

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