CROSS REFERENCE TO RELATED APPLICATIONS

The present application claims priority to Great Britain Patent Application No. 1913747.0 filed on Sep. 24, 2019. The entire contents of the above-listed application is hereby incorporated by reference for all purposes.

FIELD

The present description relates generally to a turbocharger apparatus for a vehicle, such as a motor vehicle (e.g. car, van, truck, motorcycle etc.), industrial or agricultural vehicles (e.g. tractor, forklift, bulldozer, excavator etc.), marine vessel, aircraft or any other type of vehicle.

BACKGROUND/SUMMARY

A turbocharger for a vehicle may comprise a compressor, a turbine, and an axial shaft connecting the compressor to the turbine. The turbine is generally driven by exhaust gases from the engine of the vehicle. The turbocharger is configured to compress air and provide the compressed air into the engine, thereby increasing the power and efficiency of the engine.

As there is commonly a delay between throttling up the engine and the development of increased exhaust gas flow and pressure, there may be a consequential time lag before the turbocharger output reaches the desired value.

Existing anti-lag technologies are expensive, add complexity, and cause rotor balance issues. In one example, the issues described above may be addressed by a turbocharger, comprising a compressor, a first turbine configured to drive the compressor, the first turbine configured to be driven by exhaust gases, a second turbine configured to drive the compressor, a nozzle, and a fuel supply configured to deliver engine fuel to the nozzle, wherein the second turbine is configured to be driven by fuel ejected from the nozzle.

As one example, the turbocharger comprises a pressurized fuel inlet. A controller valve and nozzle comprise an electrical connection to a control unit configured to adjust a flow of pressurized fuel to the nozzle. The fuel from the nozzle impacts a Pelton or other type of turbine connected to a turbocharger shaft assembly. By doing this, the turbocharger speed may be increased during a transient condition where exhaust gas production is too low to meet a driver demand.

It should be understood that the summary above is provided to introduce in simplified form a selection of concepts that are further described in the detailed description. It is not meant to identify key or essential features of the claimed subject matter, the scope of which is defined uniquely by the claims that follow the detailed description. Furthermore, the claimed subject matter is not limited to implementations that solve any disadvantages noted above or in any part of this disclosure.

