Engine fuel delivery management system
First Claim
1. A method of adjusting a quantity of fuel delivered to an engine when at least one of engine speed and engine load transitions, comprising:
- determining a current steady-state quantity of fuel to be delivered to the engine; and
adding a transitory quantity of fuel, based on a change from a previously determined quantity of fuel to the current steady-state quantity of fuel, to the current steady-state quantity of fuel for a period of time following initiation of the transition in at least one of engine speed and engine load.
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Accused Products
Abstract
An apparatus and method for adjusting a quantity of fuel delivered to an engine when an engine operating state transitions is provided. The apparatus and method includes determining a current steady-state quantity of fuel to be delivered to the engine and add a transitory quantity of fuel, based on a difference between a previous steady-state quantity of fuel delivered and the current steady-state quantity of fuel to be delivered, to the current steady-state quantity of fuel for a period of time following initiation of the transition. The invention also provides an apparatus and method by which an operator may adjust the amount of fuel delivered during an engine operating state transition.
56 Citations
55 Claims
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1. A method of adjusting a quantity of fuel delivered to an engine when at least one of engine speed and engine load transitions, comprising:
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determining a current steady-state quantity of fuel to be delivered to the engine; and
adding a transitory quantity of fuel, based on a change from a previously determined quantity of fuel to the current steady-state quantity of fuel, to the current steady-state quantity of fuel for a period of time following initiation of the transition in at least one of engine speed and engine load. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 27, 28, 29, 30, 31, 32, 33)
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26. The method of claim further comprising manipulating a device that adjusts a trim factor, wherein the trim factor varies the engine sensitivity factor.
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34. A method of adjusting a transitory quantity of fuel delivered to an engine when an engine operating state transitions, comprising:
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determining a current steady-state quantity of fuel to be delivered to the engine;
calculating an initial transitory quantity of fuel by applying an engine sensitivity factor to a difference between a previously determined quantity of fuel and the current steady-state quantity of fuel;
manipulating a trim device that varies a trim factor;
calculating a trimmed transitory quantity of fuel by applying the trim factor to the initial transitory quantity of fuel;
actuating a trim defeat device that alternates between an enable trim mode and disable trim mode when actuated;
setting the transitory quantity of fuel equal to the initial transitory quantity of fuel when trim mode is disabled; and
setting the transitory quantity of fuel equal to the trimmed transitory quantity of fuel when trim mode is enabled. - View Dependent Claims (35, 36, 37)
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38. An engine fuel control apparatus, comprising:
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a processor coupled to an output and a memory, whereby the memory contains fuel delivery data and instructions which, when executed by the processor, cause the processor to;
determine a current steady-state amount of fuel to be delivered by reference to the fuel delivery data;
add a transitory quantity of fuel, based on a change from a previously determined quantity of fuel to the current steady-state amount of fuel to be delivered, to the current steady-state amount of fuel to be delivered for a period of time following initiation of the transition; and
apply a signal corresponding to that amount of fuel to the output;
a fuel supply device; and
a fuel supply actuator coupled to the output of the processor and operably coupled to the fuel supply device to control fuel flow therethrough. - View Dependent Claims (39, 40)
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41. An engine fuel control apparatus, comprising:
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a processor having an input and an output, whereby a signal corresponding to a steady-state amount of fuel plus a transitory amount of fuel based on a change from a previously determined amount of fuel to the steady-state amount of fuel, is incident on the output;
a fuel supply device; and
a fuel supply actuator coupled to the output of the processor and operably coupled to the fuel supply device to control fuel flow therethrough. - View Dependent Claims (42, 43, 44, 45, 46, 47, 48, 49)
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50. A method of adjusting an amount of fuel to be provided to an engine during a transition in engine state, comprising:
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determining a steady-state quantity of fuel to be delivered to the engine;
calculating a transitory quantity of fuel to be delivered to the engine;
manipulating a device that adjusts the transitory amount of fuel to be provided to the engine during operation of the engine; and
delivering an amount of fuel to the engine that is equal to the steady-state quantity of fuel plus the manipulated transitory quantity of fuel.
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51. A method of adjusting a fuel quantity delivered to an engine, comprising:
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determining a current quantity of fuel to be delivered to the engine;
adding a transitory amount of fuel to the current quantity of fuel to be delivered to the engine based on a change from a previous quantity of fuel to be delivered to the engine to the current quantity of fuel to be delivered to the engine. - View Dependent Claims (52, 53, 54, 55)
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Specification