Sound enhancing system
AssigneeFord Global Technologies, LLC
InventorsM. Scott Christensen, Nicholas Herhusky, Michael Bastanipour, Hani Ayesh
Life of this patent
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Abstract
Methods and systems are provided for enhancing and delivering engine sounds to a vehicle cabin based on a selected mode. In one example, a method may include adjusting openings of one or more valves fluidically coupling one or more corresponding engine regions to a sound tube of a sound enhancing system based on the selected mode. Throttle opening may also be adjusted to compensate for air routed from the engine regions to the sound tube instead of flowing to the engine cylinders.
Claims17
A method comprising:
- adjusting one or more valves fluidically coupling a region of an engine to a sound tube of a sound enhancing system to route engine sound to a vehicle cabin based on a mode selected by an operator, and selectively adjusting a throttle opening to compensate for air routed from the region to the sound tube;
- wherein the region includes one or more of a lower pressure intake passage, a compressor recirculation passage, a higher pressure intake passage, and an outlet passage of a turbocharger turbine, and
- wherein compensation for air routed from the region to the sound tube is further carried out by adjusting one or more of an exhaust gas recirculation (EGR) valve opening, a compressor recirculation valve opening, and a geometry of the turbocharger turbine.
A method of enhancing engine sounds, comprising:
- during a first condition, opening one or more valves of a sound enhancing system to divert air from one or more engine regions to a sound tube and compensating for the diverted air;
- and
- during a second condition, maintaining the one or more valves of the sound enhancing system closed,
- wherein the one or more valves include a first valve coupled to a first branch extending between a lower pressure intake passage and the sound tube, a second valve coupled to a second branch extending between a compressor recirculation passage and the sound tube, a third valve coupled to a third branch extending between a higher pressure intake passage and the sound tube, and a fourth valve coupled to a fourth branch extending between an exhaust passage, downstream of an exhaust turbine, and the sound tube.
An engine system, comprising:
- a controller with computer readable instructions stored on non-transitory memory that, when executed, cause the controller to:
- in response to selection of a mode of operation of a sound enhancing system by an operator,
- open one or more valves fluidically coupling one or more corresponding engine regions to the sound enhancing system to route air from the one or more corresponding engine regions to a vehicle cabin via a sound tube of the sound enhancing system;
- estimate an amount of air routed to the vehicle cabin;
- adjust charge airflow based on the estimated amount of air routed to the vehicle cabin;
- and
- adjust an opening of the one or more valves based on a volume level of sound, as audible in the vehicle cabin, selected by the operator, wherein the one or more valves includes a first valve fluidically coupling a lower pressure intake passage to the sound tube, a second valve fluidically coupling a compressor recirculation passage to the sound tube, a third valve fluidically coupling a higher pressure intake passage to the sound tube, and a fourth valve fluidically coupling an outlet passage of a turbocharger turbine to the sound tube.
Dependencies are inferred from the claim text.