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Inline turbo/intercooled 4-cylinder DOHC 16v MIVEC Displacement: 1.5 L Bore x Stroke: 75 mm × 84.8 mm (2.95 in × 3.34 in) Compression ratio: 10.0:1 Fuel system: Direct Injection (high pressure), port injection (low pressure). System has a normal fuel pump that feeds a shared fitting on the high pressure pump.
Diesel engines are typically well suited to turbocharging due to two factors: A "lean" air–fuel ratio, caused when the turbocharger supplies excess air into the engine, is not a problem for diesel engines, because the torque control is dependent on the mass of fuel that is injected into the combustion chamber (i.e. air-fuel ratio), rather than the quantity of the air-fuel mixture.
To prevent too much vacuum being created, the blow-by gases are replaced by fresh air using a device called a breather. [1] The breather is often located in the oil cap. Many breathers had a cup or scoop and were located in the air stream of the engine radiator fan. This type of system is called "Pressure-Suction" type and air is forced into ...
In a naturally aspirated engine, air for combustion (Diesel cycle in a diesel engine or specific types of Otto cycle in petrol engines, namely petrol direct injection) or an air/fuel mixture (traditional Otto cycle petrol engines), is drawn into the engine's cylinders by atmospheric pressure acting against a partial vacuum that occurs as the piston travels downwards toward bottom dead centre ...
The air turborocket is a form of combined-cycle jet engine. The basic layout includes a gas generator, which produces high pressure gas, that drives a turbine/compressor assembly which compresses atmospheric air into a combustion chamber. This mixture is then combusted before leaving the device through a nozzle and creating thrust.
In 1999, the Volkswagen 1.2-litre TDI won the International Engine of the Year categories for "1.0 to 1.4 litres" and "Best Fuel Economy". [19] In 2000, a fuel system using unit injectors (called "Pumpe Düse" by Volkswagen) began to replace the distributor injection pump systems (except for the V8 engine, which used common rail design). [1]
Scavenging is the process of replacing the exhaust gas in a cylinder of an internal combustion engine with the fresh air–fuel mixture (or fresh air, in the case of direct-injection engines) for the next cycle. If scavenging is incomplete, the remaining exhaust gases can cause improper combustion for the next cycle, leading to reduced power ...
Animation of the 1-2-4-5-3 firing order MAN B&W 5S50MC 1,865 litre marine diesel engine. Straight-five engines are typically shorter than straight-six engines, making them easier to fit transversely in an engine bay. [1] They are also smoother than straight-four engines, [1] and are narrower than V engines [2] and flat engines.