FIELD

The present description relates generally to methods and systems for controlling airflow of an accumulator of a motorized vehicle.

BACKGROUND/SUMMARY

Vehicles may utilize on-board compressed air generated in the engine air induction system to supply tools, such as described in US 20060137345. However, the inventors herein have recognized that the pressure generated by boost devices optimized for vehicle driving operation generate creates flows higher than needed for air-power tools, along with pressure lower then needed for such tools.

In one example, the issues described above may be addressed by a method for an engine comprising controlling a flow of engine intake air to a pressure booster arranged downstream of an intake air compressor based on a gas pressure of an accumulator.

The flow rate of engine intake air entering the pressure booster may be higher than the flow rate of air exiting the air pressure booster, and high pressure air from the accumulator may be supplied to off-board devices. In this way, it is possible to provide more effective air supply to off-board devices, such as air power tools, while still retaining compressor and turbine design characteristics for efficient vehicle propulsion with the engine.

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.

