What is tsi engine wikipedia

While other automakers are playing with the idea of mass-market hybrids and electric cars, Volkswagen Group has continued to rely on its family of petrol engines as it tries to take the no. And as far as engine families are concerned, none are as well known and especially widespread as TSI. TSI is available on an increasing number of our cars, from Polo to Passat. The benefits are quite clear when you compare them to older MPI systems: high specific torque is available from much lower revs and maintained at most rpms.

This makes cars equipped with these engines more lively at lower revs, which in turn makes them more economical and cleaner. When comparing an older 1. Saving money without forfeiting performance sound too good to be true, which is why we need to examine Turbo Stratified Injection further. Parts: The auto industry sure does love its jargon and acronyms, and Volkswagen is no exception.

Or the DSG, a 7-speed speed dual-clutch automatic transmission. Perhaps the most prominent of all is the TDI, the ubiquitous Volkswagen turbocharged direct-injected diesel engine. But what about the other T-acronym engine, the TSI? The Volkswagen turbocharged stratified injected TSI engine is a lightweight, high-power, fuel-efficient four-cylinder traditional combustion engine. It is found in some form on most Volkswagen vehicles, such as the Atlas, Tiguan, and Passat.

By utilizing their extensive diesel engine knowledge to refine their traditional combustion engines, Volkswagen has been able to downsize engines without sacrificing much in the way of performance. Inspiring creative living Barcelona, home to bold ideas and culture.

Human Resources The opportunity to have a great future with us. History A journey of more than 60 years. Annual Report reasons to belive. Whistleblower Channels. Quality Policy. What is WLTP? To ensure this content displays correctly, use one of the following options. Power, redefined The eTSI with mild hybrid technology is a significant new feature.

A starter-alternator provides extra assistance for the engine when starting off and at low speeds. The lithium-ion batteries are charged under braking and while coasting.

This achieves a significant reduction in fuel consumption and emissions. New engine family. The 1. The outstanding technical aspect of the engine is its active cylinder management ACT.

Volkswagen is the first carmaker to implement this fuel saving cylinder deactivation technology on four-cylinder engines, as it was previously the preserve of large eight or 12 cylinder engines.

ACT is active over an engine speed range between 1, and 4, rpm and torque outputs between 25 and approx. If the driver presses the accelerator pedal hard, both cylinders begin to work again without a noticeable transition.

The high efficiency of the system has no negative effects on smooth running: even with two cylinders the excellently balanced the 1. All mechanical switchover processes take place within one-half of a camshaft rotation; depending on engine speed this takes between just 13 and 36 milliseconds. Accompanying interventions in ignition and throttle valve processes smooth the transitions. In such cases, cylinder shut-off is deactivated.

The driver is aware of whether two or four cylinders are active by a related indicator in the multifunction display between the speedometer and tachometer.

Altogether, the components of active cylinder management weigh just three kilogrammes. Their actuators, the camshafts and their bearing frames are integrated in the cylinder head; two low-friction bearings reduce friction of the shafts. It is only with the TSI concept — petrol direct injection plus turbocharging — that a cylinder deactivation is even conceivable in its form today. Thanks to an ultra-rigid aluminium die-cast crankcase, the new petrol engines are especially light with a maximum weight of kg.

The meticulously practised lightweight construction for which Volkswagen is renowned extends to the smallest of details: for example, engine developers reduced the crankshaft main bearing diameter of the 1. The rod bearing pins are hollow bored, and the aluminium pistons now with flat piston crowns have also been weight-optimised. Particular importance was also paid to the whole issue of thermal management.

To use optimally the thermal energy of the exhaust in the hot running phase, and to cool it more effectively at high loads, the exhaust manifold of the new engines was integrated in the cylinder head and was provided with its own cooling jacket.

By means of the innovative construction of the exhaust manifold, Volkswagen was also able to use a very narrow single-scroll compressor in turbocharger selection. In the new engine, the intercooler was integrated in the induction pipe which is made of injection-moulded plastic, allowing significantly accelerated pressure build-up. This has resulted in very responsive downsized engines.