Throttle ramp rate control system for a vehicle
First Claim
1. A system for controlling fueling of a vehicle engine coupled to a transmission system during launch of the vehicle, comprising:
- a control unit selectively coupled to a throttle sensor of said engine, wherein said control unit is configured to obtain an estimated weight of said vehicle and receive inputs from said throttle sensor and said engine to detect a high throttle demand to reach a high target engine speed during launch of said vehicle;
wherein said control unit is configured to, upon detecting said high throttle demand, adjust a default high throttle ramp rate associated with engine speed based upon said estimated weight of said vehicle.
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Accused Products
Abstract
A system and method for controlling a throttle ramp rate of a vehicle. According to an embodiment of the invention, the controlling of a throttle ramp rate of a vehicle is accomplished by determining the target engine speed for a vehicle during a vehicle launch. If it is determined that there is a high throttle demand upon the engine of the vehicle, a throttle ramp rate offset amount is determined, which is based upon an estimated weight of the vehicle. A default high throttle ramp rate may then be adjusted based upon the determined throttle ramp rate offset.
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Citations
20 Claims
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1. A system for controlling fueling of a vehicle engine coupled to a transmission system during launch of the vehicle, comprising:
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a control unit selectively coupled to a throttle sensor of said engine, wherein said control unit is configured to obtain an estimated weight of said vehicle and receive inputs from said throttle sensor and said engine to detect a high throttle demand to reach a high target engine speed during launch of said vehicle;
wherein said control unit is configured to, upon detecting said high throttle demand, adjust a default high throttle ramp rate associated with engine speed based upon said estimated weight of said vehicle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system for controlling powering of a prime mover, including a throttle sensor, coupled to a transmission system by a clutch, comprising:
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a control unit configured to be selectively coupled with at least said throttle sensor and said prime mover, said control unit being configured to obtain an estimated weight of said vehicle and to detect a high throttle demand to reach a high target engine speed during vehicle launch;
wherein said control unit is configured to, upon detecting said high throttle demand during vehicle launch, adjust a default high throttle ramp rate associated with engine speed based upon said estimated weight of said vehicle, determine whether said adjustment to said default high throttle ramp rate is reasonable, and reduce said high throttle ramp rate adjustment upon determining that said ramp rate adjustment amount is outside a predetermined range. - View Dependent Claims (13, 14, 15)
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16. A method of controlling fueling of an engine during a vehicle launch, comprising the steps of:
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determining whether there is a high throttle demand upon said engine to reach a high target engine speed during vehicle launch;
calculating a throttle ramp rate offset based on an estimated weight of said vehicle when said high throttle demand is present; and
adjusting a default high throttle ramp rate associated with engine speed based upon said calculated throttle ramp rate offset. - View Dependent Claims (17, 18, 19, 20)
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Specification