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Mercedes-Benz has been employing stratified charge engines with its Blue DIRECT system. With the stratified-charge application, the 3.0L V-6 will continue to employ direct fuel injection, but the injectors have been redesigned to spray under higher pressure later in the intake stroke, just before compression, and the fuel is shaped to arrive in ...
Gasoline direct injection (GDI), also known as petrol direct injection (PDI), [1] is a mixture formation system for internal combustion engines that run on gasoline (petrol), where fuel is injected into the combustion chamber. This is distinct from manifold injection systems, which inject fuel into the intake manifold (inlet manifold).
An all new cylinder head was needed for the Audi-developed Fuel Stratified Injection (FSI), which features cylinder-direct fuel injection straight into the combustion chambers. The result of needing to site both spark plug and fuel injector meant that the former five-valve layout had to be changed to a four-valve-per-cylinder arrangement.
Fuel Stratified Injection (FSI) high-pressure direct injection with two common rails DIN-rated motive power & torque outputs, ID codes 191 kW (260 PS; 256 bhp) at 6,000 rpm; 350 N⋅m (258 lbf⋅ft) at 2,500–5000 rpm; Compression Ratio: 11.4:1 — CDVA — Škoda Superb 4x4 DSG and Volkswagen Eos 3.6
Like the final developments of the former EA113 engine generation, all EA888s only use the VAG AG/Bosch Fuel Stratified Injection (FSI) direct injection. Furthermore, EA888 engines are also able to utilise the corporate 'valvelift' technology, which complements the existing variable valve timing.
The first spray of fuel injection creates the base lean burn mixture in the intake cycle, while the later spray(s), up to 4 more times in combustion cycle in difficult conditions for a clean burn, control when and where the ignition starts and how the burn propagates in stratified charge fashion. [3]
GM has used KIVA in the development of direct-injection, stratified charge gasoline engines as well as the fast burn, homogeneous-charge gasoline engine. [30] Mercedes-Benz developed a prototype engine called DiesOtto, with controlled auto ignition. It was displayed in its F 700 concept car at the 2007 Frankfurt Auto Show. [33]
Typically, hydraulic direct injection systems spray fuel into the air inside the cylinder or combustion chamber. Direct injection can be achieved with a conventional helix-controlled injection pump, unit injectors, or a sophisticated common-rail injection system. The last is the most common system in modern automotive engines.
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