David James Kujawa

US Patent:

20020092499, Jul 18, 2002

Filed:

Jan 12, 2001

Appl. No.:

09/759495

Inventors:

John Kargilis - Northville MI, US
David Kujawa - White Lake MI, US
Martin Berger - Livonia MI, US

International Classification:

F02M051/00
F02P005/00
G01M015/00

US Classification:

123/406580, 123/494000, 073/116000

Abstract:

A method for determining the position of a crankshaft without the use of a signal from a dedicated crankshaft position sensor. The method includes the steps of providing a pulse sensor for generating a signal in response to the transmission of vibrations through the engine block; evaluating the signal generated by the pulse sensor to identify a series of combustion events, the series of combustion events being made up of a series of individual combustion events occurring in the plurality of cylinders, the individual combustion events taking place in a predetermined order; and evaluating the series of combustion events to identify a reference crankshaft position by correlating at least one of the individual combustion events to an associated one of the plurality of cylinders.

US Patent:

6988484, Jan 24, 2006

Filed:

Nov 1, 2004

Appl. No.:

10/978630

Inventors:

David J Kujawa - White Lake MI, US
Ken Hardman - Clarkston MI, US

Assignee:

DaimlerChrysler Corporation - Auburn Hills MI

International Classification:

F02P 5/152

US Classification:

1234063, 12340629

Abstract:

A method for reducing the magnitude of a knock retard angle in a vehicle having a quantity of fuel and a system for determining the quantity of fuel. The method determines a previous fuel quantity and a present fuel quantity, determines from said present fuel quantity and said previous fuel quantity whether the quantity of fuel has increased; and decreases the magnitude of the knock retard angle upon determining the quantity of fuel has increased.