Control system and method for a bi-fuel engine
First Claim
1. A control system for an engine that utilizes first and second fuel types, said engine having first and second fuel injectors for injecting said first and second fuel types, respectively, into an engine cylinder, said control system comprising:
- a first controller including a first driver generating a first signal indicative of a desired fueling amount for one of said first and second fuel types, respectively; and
a second controller receiving said first signal, said second controller including second and third drivers for controlling said first and second fuel injectors, respectively, said second driver generating a second signal for controlling an amount of said first fuel type injected by said first fuel injector based on said first signal.
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Accused Products
Abstract
A control system 14 for a bi-fuel engine 12 is provided. The control system 14 includes a powertrain controller 52 and a bi-fuel controller 54. The controller 52 has a set of fuel injector drivers 92. The controller 50 has a set of gasoline fuel injector drivers 104 and a set of alternate fuel (AF) fuel injector drivers 106. Each of drivers 92 in controller 52 is electrically connected to a driver 104 and a driver 106 in controller 50. Thus, a control signal generated by a single driver 92 can be utilized by either of drivers 104, 106 to generate a corresponding control signal for controlling a gasoline fuel injector 38 or a AF fuel injector 40, respectively.
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Citations
17 Claims
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1. A control system for an engine that utilizes first and second fuel types, said engine having first and second fuel injectors for injecting said first and second fuel types, respectively, into an engine cylinder, said control system comprising:
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a first controller including a first driver generating a first signal indicative of a desired fueling amount for one of said first and second fuel types, respectively; and
a second controller receiving said first signal, said second controller including second and third drivers for controlling said first and second fuel injectors, respectively, said second driver generating a second signal for controlling an amount of said first fuel type injected by said first fuel injector based on said first signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A fuel injector controller for controlling first and second fuel injectors of an engine, said first and second fuel injectors injecting first and second fuel types, respectively, into an engine cylinder, comprising:
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a first driver configured to generate a first signal for controlling said first fuel injector based on a received signal indicative of a desired fueling amount when said first driver is energized;
a second driver configured to generate a second signal for controlling said second fuel injector based on said received signal when said second driver is energized; and
,a microprocessor configured to selectively energize one of said first and second drivers. - View Dependent Claims (10, 11, 12)
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13. A method of controlling an engine capable of combusting first and second fuel types, said engine having first and second fuel injectors for injecting said first and second fuel types, respectively, into an engine cylinder, comprising:
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generating a first signal indicative of a desired fueling amount for one of said first and second fuel types, said first signal being generated by a first controller; and
generating a second signal for controlling an amount of said first fuel type injected by said first fuel injector based on said first signal when said first fuel type is to be combusted, said second signal being generated by a second controller. - View Dependent Claims (14, 15, 16, 17)
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Specification