System for controlling a fueling governor for an internal combustion engine
First Claim
1. System for controlling a fueling governor for an internal combustion engine, the system comprising:
- a vehicle speed sensor producing a vehicle speed signal indicative of road speed of a vehicle carrying and internal combustion engine;
a fuel system responsive to a fueling signal to supply fuel to said engine; and
a control computer including a fueling governor producing said fueling signal as a function of a throttle command and a measured engine speed value, said governor defining an engine speed difference between a first value of said fueling signal corresponding to a no-load fueling condition and a second value of said fueling signal corresponding to a full-load fueling condition for any constant throttle command value, said control computer modifying said engine speed difference as a continual function of said vehicle speed signal.
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Accused Products
Abstract
A system for controlling a fueling governor for an internal combustion engine includes a fueling governor responsive to a throttle command value and current engine speed to produce a fueling signal for supplying fuel to the engine. The governor defines a droop value corresponding to an engine speed difference between a no-load fueling condition and a full-load fueling condition for any constant throttle command value, and also has a gain value associated therewith defining a responsiveness of the governor to changes in the throttle command value to effectuate corresponding changes in engine speed via control of the fueling signal. In one embodiment a control computer is operable to modify the droop value as a function of one or more engine and/or vehicle operating conditions. Alternatively or additionally, the control computer may be operable to modify the gain value as a function of one or more engine and/or vehicle operating conditions.
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Citations
71 Claims
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1. System for controlling a fueling governor for an internal combustion engine, the system comprising:
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a vehicle speed sensor producing a vehicle speed signal indicative of road speed of a vehicle carrying and internal combustion engine;
a fuel system responsive to a fueling signal to supply fuel to said engine; and
a control computer including a fueling governor producing said fueling signal as a function of a throttle command and a measured engine speed value, said governor defining an engine speed difference between a first value of said fueling signal corresponding to a no-load fueling condition and a second value of said fueling signal corresponding to a full-load fueling condition for any constant throttle command value, said control computer modifying said engine speed difference as a continual function of said vehicle speed signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. System for controlling a fueling governor for an internal combustion engine, the system comprising:
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means for determining a gear ratio of a transmission coupled to an internal combustion engine and producing a gear ratio value corresponding thereto;
a fuel system responsive to a fueling signal to supply fuel to said engine; and
a control computer including a fueling governor producing said fueling signal as a function of a throttle command and a measured engine speed value, said governor defining an engine speed difference between a first value of said fueling signal corresponding to a no-load fueling condition and a second value of said fueling signal corresponding to a full-load fueling condition for any constant throttle command value, said control computer modifying said engine speed difference as a function of said gear ratio value. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. System for controlling a fueling governor for an internal combustion engine, the system comprising:
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means for determining one of a mass and a weight of a vehicle carrying an internal combustion engine and producing a corresponding mass or weight value;
a fuel system responsive to a fueling signal to supply fuel to said engine; and
a control computer including a fueling governor producing said fueling signal as a function of a throttle command and a measured engine speed value, said governor defining an engine speed difference between a first value of said fueling signal corresponding to a no-load fueling condition and a second value of said fueling signal corresponding to a full-load fueling condition for any constant throttle command value, said control computer modifying said engine speed difference as a function of said mass or weight value. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27)
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28. System for controlling a fueling governor for an internal combustion engine, the system comprising:
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means for determining a condition of a road traveled by a vehicle carrying an internal combustion engine and producing a corresponding road condition signal;
a fuel system responsive to a fueling signal to supply fuel to said engine; and
a control computer including a fueling governor producing said fueling signal as a function of a throttle command and a measured engine speed value, said governor defining an engine speed difference between a first value of said fueling signal corresponding to a no-load fueling condition and a second value of said fueling signal corresponding to a full-load fueling condition for any constant throttle command value, said control computer modifying said engine speed difference as a function of said road condition signal. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35)
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36. System for controlling a fueling governor for an internal combustion engine, the system comprising:
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a vehicle speed sensor producing a vehicle speed signal indicative of road speed of a vehicle carrying and internal combustion engine;
a fuel system responsive to a fueling signal to supply fuel to said engine; and
a control computer including a fueling governor producing said fueling signal as a function of a throttle command and a measured engine speed value, said governor having at least one gain value associated therewith defining a responsiveness of said governor to changes in said throttle command to effectuate corresponding changes in said measured engine speed value via control of said fueling signal, said control computer modifying said at least one gain value as a continual function of said vehicle speed signal. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45)
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46. System for controlling a fueling governor for an internal combustion engine, the system comprising:
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means for determining a gear ratio of a transmission coupled to an internal combustion engine and producing a gear ratio value corresponding thereto;
a fuel system responsive to a fueling signal to supply fuel to said engine; and
a control computer including a fueling governor producing said fueling signal as a function of a throttle command and a measured engine speed value, said governor having at least one gain value associated therewith defining a responsiveness of said governor to changes in said throttle command to effectuate corresponding changes in said measured engine speed value via control of said fueling signal, said control computer modifying said at least one gain value as a function of said gear ratio value. - View Dependent Claims (47, 48, 49, 50, 51, 52, 53, 54)
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55. System for controlling a fueling governor for an internal combustion engine, the system comprising:
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means for determining one of a mass and a weight of a vehicle carrying an internal combustion engine and producing a corresponding mass or weight value;
a fuel system responsive to a fueling signal to supply fuel to said engine; and
a control computer including a fueling governor producing said fueling signal as a function of a throttle command and a measured engine speed value, said governor having at least one gain value associated therewith defining a responsiveness of said governor to changes in said throttle command to effectuate corresponding changes in said measured engine speed value via control of said fueling signal, said control computer modifying said at least one gain value as a function of said mass or weight value. - View Dependent Claims (56, 57, 58, 59, 60, 61, 62)
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63. System for controlling a fueling governor for an internal combustion engine, the system comprising:
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means for determining a condition of a road traveled by a vehicle carrying an internal combustion engine and producing a corresponding road condition signal;
a fuel system responsive to a fueling signal to supply fuel to said engine; and
a control computer including a fueling governor producing said fueling signal as a function of a throttle command and a measured engine speed value, said governor having at least one gain value associated therewith defining a responsiveness of said governor to changes in said throttle command to effectuate corresponding changes in said measured engine speed value via control of said fueling signal, said control computer modifying said at least one gain value as a function of said road condition signal. - View Dependent Claims (64, 65, 66, 67, 68, 69, 70)
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71. System for controlling a fueling governor for an internal combustion engine, the system comprising:
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an engine speed sensor producing an engine speed signal indicative of rotational speed of an internal combustion engine;
means for producing a throttle command indicative of a fueling request;
means for determining an operating condition associated with one of said engine and a vehicle carrying said engine and producing an operating signal corresponding thereto, said operating condition independent of said rotational speed of said engine and said throttle command;
a fuel system responsive to a fueling signal to supply fuel to said engine; and
a control computer including a fueling governor producing said fueling signal as a function of said throttle command and said engine speed signal, said governor defining an engine speed difference between a first value of said fueling signal corresponding to a no-load fueling condition and a second value of said fueling signal corresponding to a full-load fueling condition for any constant throttle command value, said governor having at least one gain value associated therewith defining a responsiveness of said governor to changes in said throttle command to effectuate corresponding changes in said rotational speed of said engine via control of said fueling signal, said control computer modifying said engine speed difference and said at least one gain value as a function of said operating condition signal.
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Specification