Method for controlling a forced induction engine
AssigneeBombardier Recreational Products Inc.
InventorsChristian REISENBERGER, Frederic MORIN
Life of this patent
Estimating the term…
Abstract
A method for controlling a forced induction engine includes: determining a first air pressure upstream of an air compressor, the air compressor supplying compressed air to the engine; determining a second air pressure downstream of the air compressor; determining a limit air flow rate to the engine corresponding to the surge limit of the air compressor based at least in part on the first and second air pressures; and controlling a throttle valve actuator to position the throttle valve at a position providing an air flow rate that is greater than or equal to the limit air flow rate. A vehicle power pack having a control unit implementing the method and a vehicle having the vehicle power pack are also disclosed.
Claims26
A method for controlling a forced induction engine comprising:
- determining a first air pressure upstream of an air compressor, the air compressor supplying compressed air to the engine;
- determining a second air pressure downstream of the air compressor;
- determining a limit air flow rate to the engine corresponding to a surge limit of the air compressor based at least in part on the first and second air pressures;
- and
- controlling a throttle valve actuator to position a throttle valve at a position providing an air flow rate that is greater than or equal to the limit air flow rate.
-17. (canceled)
A method for controlling a forced induction engine comprising:
- determining a first air pressure upstream of an air compressor, the air compressor supplying compressed air to the engine;
- determining a second air pressure downstream of the air compressor;
- determining an engine speed;
- determining a limit position of a throttle valve of the engine based at least in part on the engine speed, the first air pressure and the second air pressure, the limit position of the throttle valve being a position of the throttle valve below which a surge limit of the air compressor is exceeded;
- and
- controlling a throttle valve actuator to position the throttle valve at a position being greater than or equal to the limit position.
-34. (canceled)
Dependencies are inferred from the claim text.