Richard Kiley Rader

US Patent:

49746227, Dec 4, 1990

Filed:

Jan 23, 1990

Appl. No.:

7/468556

Inventors:

Richard K. Rader - Farmington Hills MI

Assignee:

Borg-Warner Automotive, Inc. - Sterling Heights MI

International Classification:

F16K 3106

US Classification:

137 1

Abstract:

A valve control assembly (10) controls the flow rate of a liquid through a solenoid valve (11) by repeatedly opening the valve (11) for a predetermined time. The control assembly (10) includes a timer (30) for providing a pulsed signal having a pulse width proportional to flow rate to energize and deenergize the operating coil (24) to open and close a valve sealing element (20). A nominal delay time is provided between the start time of the pulse and actual movement of the valve element (12). With each pulsed signal, the actual movement time of the valve element (12) is compared to the nominal delay time providing a deviation time. The deviation time is added to the original pulse width to obtain an adjusted pulse width, which when supplied to the operating coil (24), will effectively maintain the valve element (12) consistently open for the predetermined time.

US Patent:

57226326, Mar 3, 1998

Filed:

Apr 20, 1995

Appl. No.:

8/425402

Inventors:

Richard K. Rader - West Bloomfield MI
James David Warren - Clayton NC

Assignee:

Borg-Warner Automotive, Inc. - Sterling Heights MI

International Classification:

F16K 3106
H01H 4726

US Classification:

25112915

Abstract:

An exhaust gas recirculation (EGR) system (10) includes a proportional solenoid valve (28) that regulates vacuum pressure to a vacuum-actuated EGR valve (12). The proportional solenoid valve (28) includes an inductive coil (30) that generates a magnetic field when energized. An electronic control unit (26) energizes the coil (30) with a fixed-frequency pulse-width modulated signal. The periodic magnetic field drives a ferromagnetic armature valve (44) open and closed--alternately admitting then closing-off a flow of. atmospheric-pressure air that is used to alter the vacuum pressure output to the EGR valve (12). The vacuum pressure is dependent upon the amount of current flowing through the coil (30) during each pulse. The resistance of the coil (30) is temperature-dependent and to maintain the current in the coil (30) constant over temperature, the coil (30) is connected in series with a resistive combination of circuit elements (48) having a temperature coefficient of resistance that is opposite that of the coil (30). The resistive combination of circuit elements includes a temperature-stable resistor (50) connected across a thermistor (48) to modify the temperature-response curve of the thermistor to more closely offset that of the coil (30).

US Patent:

62305778, May 15, 2001

Filed:

Jan 20, 1999

Appl. No.:

9/234228

Inventors:

Dan J. Showalter - Plymouth MI
Carl Randall Vogt - Raleigh NC
John S. Sewell - Muncie IN
Paul G. Kowaleski - Clawson MI
Rodney E. Barr - Cary NC
Michael Wayne Miller - Raleigh NC
Thomas P. Knox - Dearborn MI
Richard K. Rader - Laguna Hills CA
Scott Wood - Westland MI

Assignee:

BorgWarner Inc. - Troy MI

International Classification:

F16H 5900

US Classification:

743375

Abstract:

Shift control assembly for a power transmission device includes an electric drive motor and gear train having an output which is coupled to and bi-directionally rotates a shift rail. The shift rail includes a pair of spaced-apart cam followers. Freely rotatably receiving the shift rail and disposed thereon between the cam followers is a shift fork assembly. The shift fork assembly includes a body having a pair of spaced-apart helical cam surfaces engaged by the cam followers and a fork engaging a shift clutch collar. As the shift rail rotates bi-directionally, the shift fork assembly and clutch collar bi-directionally translate. A circular plate is disposed for rotation with the shift rail and includes an array of apertures. A plurality of sensors are disposed in adjacent, sensing relationship to the circular plate. As the circular plate and shift rail rotate, the sensors generate unique combinations of signals corresponding to a plurality of specific angular positions of the shift rail and translational positions of the shift fork.

US Patent:

57714770, Jun 23, 1998

Filed:

May 10, 1996

Appl. No.:

8/626055

Inventors:

Dan J. Showalter - Plymouth MI
Richard K. Rader - West Bloomfield MI
Gary Oliveira - Auburn Hills MI
E. David Ray - Holly MI

Assignee:

Borg-Warner Automotive, Inc. - Sterling Heights MI

International Classification:

B60K 17346
F16H 3708

US Classification:

701 51

Abstract:

A method and apparatus for operating a power transfer device such as a vehicle transfer case having, shaft speed sensors, a two speed (high-low) drive assembly, an electrically, pneumatically or hydraulically operated shift operator and a microprocessor comprising the steps of sensing the speeds of the transfer case input shaft and output shaft, calculating the rate of change (. DELTA. S/. DELTA. t) of the speed of the input shaft, predicting, based upon such rate of change, a time when the input shaft and the output shaft will be synchronized and commencing movement of such shift operator at a time prior to such synchronization in order to effect engagement of such clutch into high gear at substantially the instant of synchronization.

US Patent:

54007585, Mar 28, 1995

Filed:

Sep 21, 1993

Appl. No.:

8/125089

Inventors:

Richard K. Rader - West Bloomfield MI
Rodney E. Barr - Cary NC
Carl R. Vogt - Raleigh NC
John J. C. Kopera - Rochester Hills MI

Assignee:

Borg-Warner Automotive, Inc. - Sterling Heights MI
Chrysler Corporation - Highland Park MI

International Classification:

F02M 5100

US Classification:

123494

Abstract:

An electronic sensor (20) for measuring methanol content in gasoline fuels for automotive engines including a sensing coil (108/108') and a paired capacitance element (42,44/42', 44') that cooperates with the coil to define an oscillating circuit wherein the gasoline methanol fuel mixture is used as a dielectric for the capacitor elements of the sensor, a change in the methanol concentration in the fuel resulting in a change in the dielectric constant of the sensor (20) which results in a change in the resonant frequency of the capacitor elements (108/108', 42/44/42', 44'), and a microprocessor circuit (160) which responds to a change in the oscillating frequency to establish a control signal that may be used by an automotive powertrain controller (24) to effect appropriate adjustments in the air/fuel ratio and ignition timing for the engine (10) to compensate for variations in the methanol content of the fuel.

US Patent:

52556565, Oct 26, 1993

Filed:

Feb 28, 1992

Appl. No.:

7/844958

Inventors:

Richard K. Rader - Farmington Hills MI
Rodney E. Barr - Cary NC
Carl R. Vogt - Raleigh NC

Assignee:

Borg-Warner Automotive, Inc. - Sterling Heights MI

International Classification:

F02M 5100

US Classification:

123494

Abstract:

An electronic sensor (20) for measuring methanol content in gasoline fuels for automotive engines including a sensing coil (108/108') and a paired capacitance element (42,44/42',44') that cooperates with the coil to define an oscillating circuit wherein the gasoline methanol fuel mixture is used as a dielectric for the capacitor elements of the sensor, a change in the methanol concentration in the fuel resulting in a change in the dielectric constant of the sensor (20) which results in a change in the resonant frequency of the capacitor elements (108/108',42,44/42',44'), and a microprocessor circuit (160) which responds to a change in the oscillating frequency to establish a control signal that may be used by an automotive powertrain controller (24) to effect appropriate adjustments in the air/fuel ratio and ignition timing for the engine (10) to compensate for variations in the methanol content of the fuel.