Method and System for Fuel Injection Simulation

• US 20080270009A1
• Filed: 04/11/2008
• Published: 10/30/2008
• Est. Priority Date: 04/26/2007
• Status: Abandoned Application

• Current Assignee: Paul Spivak
• Original Assignee: Paul Spivak
• Inventors: Spivak, Paul
• Application Number:
  US12/101,564
• Publication Number:
  US 20080270009A1
• Time in Patent Office: Days
• US Class Current: 701/105
• CPC Class Codes: F02D 2041/2024 the control switching a load after time-on and time-off pulses
• CPC Class Codes: F02D 2041/228 Warning displays
• CPC Class Codes: F02D 2400/11 After-sales modification devices designed to be used to modify an engine afterwards
• CPC Class Codes: F02D 41/0025 Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
• CPC Class Codes: F02D 41/221 relating to the failure of actuators or electrically driven elements

Abstract

A pulse width signal modifier comprises a fuel injector monitor in communication with an engine fuel injector. A signal modifier is configured to modify a 25% greater pulse width signal output to the fuel injector, wherein the modified pulse width signal is optimized for an E85 fuel blend. The fuel injector monitor is configured to monitor the engine fuel injector for a fault condition and communicate the fault condition to a fuel injector

Claims

1. A pulse width signal modifier, comprising:

a fuel injector monitor in communication with an engine fuel injector; and

a fuel injector simulator in communication with an onboard diagnostic component;

wherein the signal modifier is configured to modify pulse width signal output to the fuel injector;

wherein the fuel injector monitor is configured to monitor the engine fuel injector for a fault condition and communicate the fault condition to the fuel injector simulator; and

,

wherein the fuel injector is configured to simulate a fuel injector fault to the onboard diagnostic component in response to a detected fault condition communicated to the fuel injector simulator by the fuel injector monitor.

2. The system of claim 1, wherein the pulse width signal is optimized for a gasoline blend, and wherein the modified pulse width signal is optimized for an E85 fuel blend.

3. The system of claim 2, wherein the modified pulse width signal is about 25% greater than the pulse width signal.

4. The system of claim 3, wherein the fuel injector simulator comprises a power transistor and a power resistor.

5. A method, comprising the steps of:

monitoring an engine fuel injector for a fault condition;

communicating a fuel injector fault condition to a fuel injector simulator in response to the step of monitoring detecting a fault condition; and

simulating a fuel injector fault to an onboard diagnostic component in response to a communicated fuel injector fault condition.

6. The method of claim 5, further comprising the steps:

modifying pulse width signal inputs from an engine control unit to generate a modified pulse width signal output to the fuel injector;

optimizing the pulse width signal for a gasoline blend; and

optimizing the modified pulse width signal for an E85 fuel blend.

7. The method of claim 6, wherein the step of modifying the pulse width signal comprises widening the pulse width signal by a widening factor.

8. The method of claim 7, wherein the step of modifying the pulse width signal comprises widening the pulse width signal by about 25%.