A system and method are provided for controlling the operation of a vehicle equipped with a hybrid electric front end motor-generator system during vehicle platooning operations to maintain a predetermined separation distance between vehicles in the vehicle platoon. The motor-generator is operated to generate vehicle acceleration and deceleration by outputting torque to an engine crankshaft to accelerate the vehicle or generating a regenerative braking load via the crankshaft on the vehicle, in place of the vehicle's internal combustion engine and braking systems, when the required vehicle accelerations and/or decelerations needed to maintain the desired vehicle separation distance are small and within the torque output or torque load capacity of the motor-generator. If the required vehicle acceleration or deceleration is greater than the motor-generator's available capacity, the motor-generator may be operated to provide a portion of the required acceleration or deceleration, as a supplement to the acceleration provided by the engine or the deceleration provided by the braking system. The use of a front end motor-generator system in this manner increases overall vehicle energy efficiency by decreasing fuel consumption and increasing the amount of electrical energy captured for storage during vehicle platooning operations.
Vehicle platooning with a hybrid electric vehicle system
2018-07-10
Patent
Elektronische Ressource
Englisch
IPC: | B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / G01S RADIO DIRECTION-FINDING , Funkpeilung / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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