Abstract: An apparatus and method for customizing the sound emitted from an automotive vehicle during operation. Specifically, the vehicle operator uses a controller to vary the sound emitted from the engine exhaust and intake or engine compartment sounds during vehicle operation. In addition, the operator can control the sound level, sound type and sound aspect in the vehicle interior or passenger compartment and the vehicle exterior. Further, the apparatus uses an active sound control system, such as those using microphones and speakers, to customize and/or tune the sound emanating from the vehicle.

Abstract: An apparatus and method for customizing the sound emitted from an automotive vehicle during operation. Specifically, the vehicle operator uses a controller to vary the sound emitted from the engine exhaust and intake or engine compartment sounds during vehicle operation. In addition, the operator can control the sound level, sound type and sound aspect in the vehicle interior or passenger compartment and the vehicle exterior. Further, the apparatus uses an active sound control system, such as those using microphones and speakers, to customize and/or tune the sound emanating from the vehicle.

Abstract: A noise suppression assembly includes a first venturi configured to provide air to a combustion chamber and a second venturi configured to provide air to the combustion chamber. The noise suppression assembly also includes a valve subsystem configured to selectively limit air flow through at least one of the first venturi and the second venturi.

Abstract: An air induction arrangement 7 for a variable displacement engine is provided. The air induction arrangement 7 includes first and second plenums 22, 24 fluidly connected to respective first and second throttles 26, 28. The first and second throttles 26, 28 are connected to respective first and second inlets 44, 60. In partial operation, the air induction arrangement 7 induces air into the first plenum 22. In higher power demand operation, the air induction arrangement 7 additionally induces air through the second plenum 24. There is a reduction of the cancellation of acoustic output between the first and second inlets 44, 60 so that an acoustic output of the engine 14 operating with only a first group of cylinders 16 is similar to the acoustic output of the engine when the engine is operating with both groups of cylinders 16, 20.

Abstract: An air induction arrangement 7 for a variable displacement engine is provided. The air induction arrangement 7 includes first and second plenums 22, 24 fluidly connected to respective first and second throttles 26, 28. The first and second throttles 26, 28 are connected to respective first and second inlets 44, 60. In partial operation, the air induction arrangement 7 induces air into the first plenum 22. In higher power demand operation, the air induction arrangement 7 additionally induces air through the second plenum 24. There is a reduction of the cancellation of acoustic output between the first and second inlets 44, 60 so that an acoustic output of the engine 14 operating with only a first group of cylinders 16 is similar to the acoustic output of the engine when the engine is operating with both groups of cylinders 16, 20.