Ronald Michael Reese

US Patent:

20020099482, Jul 25, 2002

Filed:

Dec 8, 2000

Appl. No.:

09/732995

Inventors:

Ronald Reese - Goodrich MI, US
Gary Pallach - Chesterfield MI, US
Gary Dawson - Rochester MI, US

International Classification:

G01M017/00
F02M015/00

US Classification:

701/029000, 123/540000

Abstract:

A method is provided for diagnosing the rationality of a thermostat in a motor vehicle. The method includes an engine warm-up model and a thermostat diagnostic. The engine warm-up model predicts the temperature that the engine coolant temperature should be equal to at a given time after start-up. This is based on the engine coolant temperature at start-up, ambient air temperature, and how the vehicle is driven subsequent to start-up. This predicted engine coolant temperature is compared to the actual engine coolant temperature as read by an engine coolant temperature sensor. The error between the predicted engine coolant temperature and the actual engine coolant temperature is calculated and integrated over time. The thermostat diagnostic runs at a pre-selected time after start-up and compares the integrated error to a calibrated threshold value. Depending upon the results of the comparison, a pass, fail, or inconclusive condition is determined.

US Patent:

20020193921, Dec 19, 2002

Filed:

Apr 8, 2002

Appl. No.:

10/118505

Inventors:

Ronald Reese - Goodrich MI, US
Gary Pallach - Chesterfield MI, US
Gary Dawson - Rochester MI, US
David Ploucha - Ann Arbor MI, US
Susan Aldridge - Linden MI, US

International Classification:

G06F017/00

US Classification:

701/029000, 701/001000

Abstract:

A method is provided for testing a thermostat in a motor vehicle. The method includes an engine warm-up model and a thermostat diagnostic. The engine warm-up model predicts the temperature that the engine coolant temperature should be equal to at a given time after start-up. This is based on the engine coolant temperature at start-up, ambient air temperature, and how the vehicle is driven subsequent to start-up. This predicted engine coolant temperature is compared to the actual engine coolant temperature as read by an engine coolant temperature sensor. The error between the predicted engine coolant temperature and the actual engine coolant temperature is calculated and integrated over time. The thermostat diagnostic runs at a pre-selected temperature after start-up and compares the integrated error to a predetermined threshold value. Depending upon the results of the comparison, a pass, fail, or inconclusive condition is determined.

US Patent:

6152106, Nov 28, 2000

Filed:

Apr 8, 1999

Appl. No.:

9/288839

Inventors:

Ronald A. Reese - Goodrich MI
Ken Hardman - Royal Oak MI

Assignee:

DaimlerChrysler Corporation - Auburn Hills MI

International Classification:

F02D 4108

US Classification:

12333916

Abstract:

A power steering load compensation system for an internal combustion engine which employs a pressure sensor to monitor the output pressure of the power steering pump. The pressure sensor provides an input signal to an engine controller, and the engine controller generates an automatic idle speed output signal for controlling the idle speed motor of the engine throttle body. By varying the air flow through the throttle body in accordance with output pressure of the power steering pump, which varies with the pump load placed upon the engine, dips and surges in engine revolutions per minute (RPM) at idle and low speeds may be substantially reduced.

US Patent:

62166468, Apr 17, 2001

Filed:

Dec 23, 1999

Appl. No.:

9/471900

Inventors:

Gary M. Smith - Waterford MI
Ronald A. Reese - Goodrich MI
Ladd S. Lubaczewski - Washington Township MI
Peter A. Varma - Royal Oak MI
Gavin J. DeNyse - Cambridge MA
Christopher J. Hauer - Rochester Hills MI

Assignee:

DaimlerChrysler Corporation - Auburn Hills MI

International Classification:

F01P 322

US Classification:

123 4154

Abstract:

An engine cooling system for an automotive vehicle including a liquid coolant deaeration and overflow bottle having plural cells constituting a degassing chamber assembly with the first cell having only an upper fluid inlet for initially receiving liquid coolant from the engine cooling system and a lower flow-through window which leads into an adjacent cell for receiving coolant from the first cell. The other cells are likewise connected together in series and the final cell has an outlet connected back into the engine cooling system. Coolant in the cells of the degassing chamber assembly creates a liquid trap arrangement to prevent any substantial back flow of accumulated air from the deaeration chamber assembly back into the engine's cooling system when engine operation is terminated. Most importantly, this prevents any formation of air bubbles in the heater core circuit which may restrict coolant flow and seriously degrade heater effectiveness, particularly at idle and low engine speed operation.