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GDI engine from a BMW car (fuel injector is located above the red triangle) 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 ...
Homogeneous charge compression ignition. Homogeneous Charge Compression Ignition (HCCI) is a form of internal combustion in which well-mixed fuel and oxidizer (typically air) are compressed to the point of auto-ignition. As in other forms of combustion, this exothermic reaction produces heat that can be transformed into work in a heat engine.
Manifold injection. Manifold injection is a mixture formation system for internal combustion engines with external mixture formation. It is commonly used in engines with spark ignition that use petrol as fuel, such as the Otto engine, and the Wankel engine. In a manifold-injected engine, the fuel is injected into the intake manifold, where it ...
The system was a speed/density system, using engine speed and intake manifold air density to calculate the amount of fuel to be injected. In 1974, Bosch introduced the K-Jetronic system, which used a continuous flow of fuel from the injectors (rather than the pulsed flow of the D-Jetronic system). K-Jetronic was a mechanical injection system ...
Wastegate. A wastegate is a valve that controls the flow of exhaust gases to the turbine wheel in a turbocharged engine system. [1] Diversion of exhaust gases regulates the turbine speed, which in turn regulates the rotating speed of the compressor. The primary function of the wastegate is to regulate the maximum boost pressure in turbocharger ...
Lambda II engine at Paris Motor Show 2018. It is a version of Lambda II GDi 3.3 engine with two turbochargers. [2] It produces 370 PS (272 kW; 365 hp) at 6,000 rpm and 52 kg⋅m (510 N⋅m; 376 lb⋅ft) of torque between 1,300 and 4,500 rpm. Applications: 2017–present Genesis G70; 2016–2020 Genesis G80 (DH) 2015–2021 Genesis G90 (HI)
The purpose of the divided combustion chamber is to speed the combustion process, and to increase power output by increasing engine speed. [3] The addition of a prechamber increases heat loss to the cooling system and thereby lowers engine efficiency. The engine requires glow plugs for starting. In an indirect injection system the air moves ...
Engine tuning. Engine tuning is the adjustment or modification of the internal combustion engine or Engine Control Unit (ECU) to yield optimal performance and increase the engine's power output, economy, or durability. These goals may be mutually exclusive; an engine may be de-tuned with respect to output power in exchange for better economy or ...