Method and apparatus for providing interface to original equipment engine control computer
First Claim
1. An interface apparatus for use in a fuel injector engine system, comprising:
- an input terminal configured to receive a fuel injector control signal; and
a controller operatively coupled to the input terminal to receive said fuel injector control signal, the controller further configured to generate a current controlled fuel injector control signal based on the fuel injector control signal and one or more of an engine operating parameters.
0 Assignments
0 Petitions
Accused Products
Abstract
Method and apparatus for retrofitting a low impedance fuel injection system to a high impedance fuel injection system internal combustion engine is disclosed. The original high impedance electronic control system may be retained, while system modification circuitry is added along the fuel injector control path. In one aspect, an original fuel injector control signal is intercepted along the fuel injector control wire. The intercepted signal is then modified from a simple on-off signal to a signal which varies the fuel injector current as a function of time, such that the on-state from the original high impedance system is converted to a current controlled signal. Moreover, using a plurality of parameters, the fuel injector pulsewidth may be modified, as well as the peak and hold current levels provided to the fuel injectors.
-
Citations
19 Claims
-
1. An interface apparatus for use in a fuel injector engine system, comprising:
-
an input terminal configured to receive a fuel injector control signal; and a controller operatively coupled to the input terminal to receive said fuel injector control signal, the controller further configured to generate a current controlled fuel injector control signal based on the fuel injector control signal and one or more of an engine operating parameters. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. An interface apparatus for use in a fuel injector engine system, comprising:
-
an input terminal configured to receive a fuel injector control signal; a sensor unit configured to monitor one or more of the engine operating parameters, and in accordance therewith, generate a sensor output signal; and a controller operatively coupled to the input terminal and to the sensor unit, the controller configured to receive said fuel injector control signal and the sensor output signal, and in accordance therewith, generate a current controlled fuel injector control signal. - View Dependent Claims (9, 10, 11, 12)
-
-
13. A method of providing an interface in a fuel injector engine system, comprising the steps of:
-
receiving a fuel injector control signal; receiving one or more of an engine operating parameters; and generating a current controlled fuel injector control signal based on the fuel injector control signal and the one or more of an engine operating parameters. - View Dependent Claims (14, 15, 16, 17, 18, 19)
-
Specification