Robert P Carson

US Patent:

56216440, Apr 15, 1997

Filed:

Feb 8, 1995

Appl. No.:

8/385483

Inventors:

Robert P. Carson - Oxford MI
William J. Hynes - Ann Arbor MI
Edward W. Czarnecki - Washington MI
Christoph Micha - Farmington Hills MI
Edwin W. Bacon - Goodrich MI

Assignee:

Chrysler Corporation - Auburn Hills MI

International Classification:

G01M 1500

US Classification:

36443104

Abstract:

In an engine, associated control system, and method the engine including at least one camshaft having an angular position at a given point in time, and a crankshaft having an angular position at a given point in time. The method comprising the steps of measuring a first window of time using at least one crankshaft angular position pulse as a reference point in time and measuring a second window of time using at least one camshaft angular position pulse as a reference point in time. The method also ascertains an angular position difference between at least one camshaft and crankshaft equal to the second window of time divided by the first window of time and determines whether a misalignment between the at least one camshaft and the crankshaft exists by comparing the angular position difference between the at least one camshaft and crankshaft to a predetermined value.

US Patent:

56808437, Oct 28, 1997

Filed:

Dec 6, 1996

Appl. No.:

8/761271

Inventors:

Edwin W. Bacon - Goodrich MI
Robert P. Carson - Oxford MI

Assignee:

Chrysler Corporation - Auburn Hills MI

International Classification:

F02P 5145

US Classification:

123414

Abstract:

A method of replicating a crankshaft position signal for an internal combustion engine in a motor vehicle includes the steps of determining whether at least one predetermined condition is met and ending the method if the at least one predetermined condition is not met. The method also includes the steps of determining which cylinder is firing if the at least one predetermined condition is met and determining an ignition period between cylinder firing events for the cylinder that is firing. The method further includes the steps of determining a time to synthesize a crankshaft edge based on the ignition period. The method also includes the step of synthesizing a crankshaft edge based on the time and operating the internal combustion engine based on the synthesized crankshaft edge.