A vehicle propulsion system includes an engine arranged to output a first torque to a driveshaft and an electric motor arranged to output a second torque to the driveshaft. The vehicle also includes an automatic transmission arranged to receive an input torque from the driveshaft. The vehicle further includes an exhaust system to output combustion byproduct from the engine. A vehicle controller is programmed to, during deceleration, cause the engine to apply a negative first torque to increase an audible exhaust system sound. The controller is also programmed to activate the electric motor to output a positive second torque such that the input torque to the automatic transmission does not exceed a transmission torque threshold during deceleration.
Vehicle exhaust sound control systems and methods
2021-04-27
Patent
Electronic Resource
English
IPC: | 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 / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / F01N GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL , Schalldämpfer oder Auspuffvorrichtungen für Gase von Kraft- und Arbeitsmaschinen oder von Kraftmaschinen allgemein |
Vehicle Exhaust Sound Specification Development
SAE Technical Papers | 1995
|Vehicle exhaust sound specification development
Automotive engineering | 1995
|Vehicle Exhaust Sound Specification Development
British Library Conference Proceedings | 1995
|