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The Valvetronic system is a BMW variable valve lift systemwhich, in combination with variable valve timing, allows infinite adjustment of the intake valve timing and duration. The system claims to improve fuel economy and emissions, and negates the need for a throttle body in regular use.
First introduced by BMW on the 316ti compact in 2001,Valvetronic has since been added to many of BMW's engines. The first application of this technology in a turbocharged engine was the N55 engine.
In internal combustion engines, variable valve timing (VVT) is the process of altering the timing of a valve lift event, and is often used to improve performance, fuel economy or emissions. It is increasingly being used in combination with variable valve lift systems. There are many ways in which this can be achieved, ranging from mechanical devices to electro-hydraulic and camless systems. Increasingly strict emissions regulations are causing many automotive manufacturers to use VVT systems.
VVT-i, or Variable Valve Timing with intelligence, is an automobile variable valve timing technology developed by Toyota. The Toyota VVT-i system replaces the Toyota VVT offered starting in 1991 on the 5-valve per cylinder 4A-GE engine. The VVT system is a 2-stage hydraulically controlled cam phasing system.
VANOS is a variable valve timing system used by BMW on various automotive petrol engines since 1992. The name is an abbreviation of the German words for variable camshaft timing: variable nockenwellensteuerung.
The BMW N42 is a DOHC four-cylinder petrol engine which replaced the BMW M43 and was produced from 2001-2004.
The BMW N62 is a naturally aspirated V8 petrol engine which was used in BMW cars from 2001–2010. It also remained in small-scale production for the Morgan Aero until 2019. The N62 is the world's first engine to use a continuously variable-length intake manifold, and BMW's first V8 to feature variable valve lift.
In automotive engineering, an inlet manifold or intake manifold is the part of an engine that supplies the fuel/air mixture to the cylinders. The word manifold comes from the Old English word manigfeald and refers to the multiplying of one (pipe) into many.
Prince is the codename for a family of automobile straight-4 engines developed by PSA Peugeot Citroën and BMW. It is a compact engine family of 1.4–1.6 L in displacement and includes most modern features such as gasoline direct injection, turbocharging, and BMW VANOS variable valve timing.
The BMW N45 is a naturally aspirated four-cylinder petrol engine which replaced the BMW N40 and was produced from 2004-2011. It was produced alongside the BMW N46 engine and only sold in several countries, where vehicle taxes favoured small-displacement engines.
The BMW N52 is a naturally aspirated straight-six petrol engine which was produced from 2004-2015. The N52 replaced the BMW M54 and debuted on the E90 3 Series and E63 6 Series.
The BMW N73 is a naturally aspirated V12 petrol engine which replaced the BMW M73 and was produced from 2003–2016. It was used in the BMW 7 Series and Rolls-Royce Phantom.
The BMW N53 is a naturally aspirated straight-six petrol engine which was produced from 2006 to 2013. The N53 replaced the BMW N52 and was released in 2006 in the post-facelift E60 5 Series.
Nissan Variable Valve Event and
The BMW N63 is a twin-turbocharged V8 petrol engine which has been in production from 2008 to present. The N63 is the world's first production car engine to use a "hot-vee" layout, with the turbochargers located inside the "V" of the engine. It is also BMW's first turbocharged V8 engine.
The BMW N55 is a turbocharged straight-six petrol engine that began production in 2009. The N55 replaced the BMW N54 engine and was introduced in the F07 5 Series Gran Turismo.
MultiAir is a hydraulically-actuated variable valve timing and variable valve lift engine technology enabling "cylinder by cylinder, stroke by stroke" control of intake air directly via a gasoline engine's inlet valves. Developed by Fiat Powertrain Technologies, the technology bypasses a primary engine inefficiency: pumping losses caused by restriction of the intake passage by the throttle plate, used to regulate air feeding the cylinders.
The BMW N74 is a twin-turbo V12 petrol engine which replaced the N73 and has been produced since 2008. Production will end in 2023. It is BMW's first turbocharged V12 engine and is also used in several Rolls-Royce models.
The BMW N20 is a turbocharged four-cylinder petrol engine which replaced the N53 and was produced from 2011-2017. Although the N20 is a four-cylinder engine, it is considered a replacement for the naturally aspirated six-cylinder N52/N53 because it powers equivalent models, producing similar horsepower to the N52/N53 with greater low-rpm torque and better efficiency.
Variable valve lift (VVL) is an automotive piston engine technology which varies the height a valve opens in order to improve performance, fuel economy or emissions. There are two main types of VVL: discrete, which employs fixed valve lift amounts, and continuous, which is able to vary the amount of lift. Continuous valve lift systems typically allow for the elimination of the throttle valve.
The BMW B58 is a turbocharged straight-six engine, which began production in 2015. The B58 replaced the N55 and was launched in the F30 340i.
The BMW R1250GS is a motorcycle manufactured in Berlin, Germany by BMW Motorrad, part of the BMW group. It is one of the BMW GS family of dual sport motorcycles. It has a 1,254 cc (76.5 cu in), two-cylinder boxer engine with 4-valves per cylinder and variable valve timing (VVT).