Induction tuning using multiple intake valve lift events
First Claim
1. A tuned induction control system for an engine having a piston that is reciprocally disposed in a cylinder, comprising:
- a first module that actuates an intake valve associated with said cylinder;
a second module that determines a second intake valve open timing based on an intake air temperature and an engine speed, wherein said first module actuates said intake valve during a first intake event and actuates said intake valve during a second intake event that is subsequent to said first intake event, wherein said first and second intake events occur during a common intake stroke of said piston and said intake valve is opened at said second intake valve open timing during said second intake event.
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Accused Products
Abstract
A tuned induction control system for an engine at or near full load having a piston that is reciprocally disposed in a cylinder includes a first module that actuates an intake valve associated with the cylinder and a second module that determines a second intake valve open timing based on an intake air temperature, pressure and an engine speed. The first module actuates the intake valve during a first intake event and actuates the intake valve during a second intake event that is subsequent to the first intake event. The first and second intake events occur during a common intake stroke of the piston and the intake valve is opened at the second intake valve open timing during the second intake event.
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Citations
19 Claims
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1. A tuned induction control system for an engine having a piston that is reciprocally disposed in a cylinder, comprising:
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a first module that actuates an intake valve associated with said cylinder; a second module that determines a second intake valve open timing based on an intake air temperature and an engine speed, wherein said first module actuates said intake valve during a first intake event and actuates said intake valve during a second intake event that is subsequent to said first intake event, wherein said first and second intake events occur during a common intake stroke of said piston and said intake valve is opened at said second intake valve open timing during said second intake event. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of tuning an induction system of an engine having a cylinder that is reciprocally disposed in a piston to increase a volumetric efficiency of said engine, comprising:
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determining a second intake valve open timing of an intake valve based on an intake air temperature and an engine speed; actuating said intake valve during a first intake event; and actuating said intake valve during a second intake event that is subsequent to said first intake event, wherein said first and second intake events occur during a common intake stroke of said piston and said intake valve is opened at said second intake valve open timing during said second intake event. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method of tuning an induction system of an engine having a piston that is reciprocally disposed in a cylinder to increase a volumetric efficiency of said engine, comprising:
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determining a second intake valve open timing of an intake valve based on an intake air temperature and an engine speed; actuating said intake valve during a first intake event; determining a first intake valve close timing based on said second intake valve open timing and an expansion ratio of said cylinder; ending said first intake event by closing said intake valve at a first intake valve close timing, which occurs a predetermined time before a second intake event; and actuating said intake valve during said second intake event, which is subsequent to said first intake valve event, wherein said first and second intake events occur during a common intake stroke of said piston and said intake valve is opened at said second intake valve open timing during said second intake event. - View Dependent Claims (16, 17, 18, 19)
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Specification