Fuel injection control system with exempt area of fuel map
First Claim
1. A fuel management module for use with an internal combustion engine having a plurality of fuel injectors, said internal combustion engine further having an electronic control unit (ECU) providing ECU fuel injector control signals, said fuel management module being coupled to said electronic control unit for receiving said ECU fuel injector control signals, said fuel management module providing a plurality of offset fuel injector control signals coupled to respective ones of said plurality of fuel injectors, said fuel management module comprising:
- a memory for storing a fuel map defining a plurality of fuel offset values for a respective plurality of predetermined values of engine speed and throttle position;
said memory further storing a definition of an exempt area within said fuel map;
a programmed central processor for computing said plurality of offset fuel injector control signals in accordance with said fuel offset values stored in said fuel map; and
means for prohibiting a user of said fuel management module from modifying said fuel offset values in said exempt area of said fuel map.
6 Assignments
0 Petitions
Accused Products
Abstract
A fuel management system for fuel injected vehicles permits a user to modify vehicle performance without exceeding acceptable standards for vehicle emissions. A portion of the fuel management system fuel map is designated as an exempt area in which the user is not permitted to modify the fuel offset values.
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Citations
21 Claims
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1. A fuel management module for use with an internal combustion engine having a plurality of fuel injectors, said internal combustion engine further having an electronic control unit (ECU) providing ECU fuel injector control signals, said fuel management module being coupled to said electronic control unit for receiving said ECU fuel injector control signals, said fuel management module providing a plurality of offset fuel injector control signals coupled to respective ones of said plurality of fuel injectors, said fuel management module comprising:
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a memory for storing a fuel map defining a plurality of fuel offset values for a respective plurality of predetermined values of engine speed and throttle position; said memory further storing a definition of an exempt area within said fuel map; a programmed central processor for computing said plurality of offset fuel injector control signals in accordance with said fuel offset values stored in said fuel map; and means for prohibiting a user of said fuel management module from modifying said fuel offset values in said exempt area of said fuel map. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. In a fuel management module for use with an internal combustion engine having a plurality of fuel injectors, said internal combustion engine further having an electronic control unit (ECU) providing ECU fuel injector control signals, said fuel management module being coupled to said electronic control unit for receiving said ECU fuel injector control signals, said fuel management module providing a plurality of offset fuel injector control signals coupled to respective ones of said plurality of fuel injectors, said fuel management module further having a memory for storing a fuel map defining a plurality of fuel offset values for a respective plurality of predetermined values of engine speed and throttle position, a method comprising:
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storing a fuel map in said memory containing a plurality of fuel offset values; storing in said memory a definition of an exempt area within said fuel map; and prohibiting a user of said fuel management module from modifying said fuel offset values in said exempt area of said fuel map. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. In a fuel management module for use with an internal combustion engine having a plurality of fuel injectors, said internal combustion engine further having an electronic control unit (ECU) providing ECU fuel injector control signals, said fuel management module being coupled to said electronic control unit for receiving said ECU fuel injector control signals, said fuel management module providing a plurality of offset fuel injector control signals coupled to respective ones of said plurality of fuel injectors, said fuel management module further having a memory for storing a fuel map defining a plurality of fuel offset values for a respective plurality of predetermined values of engine speed and throttle position, an improvement comprising:
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a fuel map stored in said memory, said fuel map containing a plurality of fuel offset values; a definition of an exempt area of said fuel map stored in said memory; and a means for prohibiting a user of said fuel management module from modifying said fuel offset values in said exempt area of said fuel map. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification