Front end motor-generator system and hybrid electric vehicle operating method
AssigneeBendix Commercial Vehicle Systems LLC
InventorDavid Colavincenzo
Life of this patent
Estimating the term…
Abstract
A system and method integrate electrification of vehicle accessories conventionally driven by an internal combustion engine in which an electric motor is coupled to a common accessory drive that drive a plurality of accessories, such as a power steering pump, an air conditioning compressor, an air compressor, a thermodynamic heater and/or a coolant pump. The integrated electrified accessory unit preferably has the electric motor, accessory drive and accessories arranged in a common housing which is configured to be mounted to a chassis frame rail of the vehicle, the common housing including wall penetrations which facilitate rapid connection of the accessories to external lines of the vehicle.
Claims11
A method of operating an accessory drive configured to drive a plurality of accessories, comprising performing, by a controller, the acts of:
- receiving at least one operating condition input;
- determining from the at least one input that an accessory of the plurality of accessories is to be driven by the accessory drive, the accessory having an individual accessory drive clutch;
- in response to the individual accessory drive clutch being a multi-speed clutch:
- determining a target operating speed of the accessory to be driven;
- and
- controlling the multi-speed clutch to obtain the target accessory speed;
- and
- in response to the individual accessory drive clutch not being a multi-speed clutch and in response to the individual accessory drive clutch being a dog clutch:
- stopping the accessory drive,
- engaging the dog clutch;
- and
- restarting the accessory drive after the dog clutch is engaged.
A method of operating an accessory drive configured to drive a plurality of accessories, comprising performing, by a controller, the acts of:
- receiving at least one operating condition input;
- determining from the at least one input that two or more accessories of the plurality of accessories is to be driven by the accessory drive, each of the two or more accessories having an individual accessory drive clutch;
- and
- for each accessory of the two or more accessories:
- in response to the individual accessory drive clutch for the accessory being a multi-speed clutch:
- determining a target operating speed of the accessory to be driven;
- and
- controlling the multi-speed clutch to obtain the target accessory speed;
- and
- in response to the individual accessory drive clutch not being a multi-speed clutch and in response to the individual accessory drive clutch being a dog clutch:
- stopping the accessory drive,
- engaging the dog clutch;
- and
- restarting the accessory drive after the dog clutch is engaged.
Dependencies are inferred from the claim text.