Steven H Lapointe

US Patent:

8510004, Aug 13, 2013

Filed:

Mar 5, 2010

Appl. No.:

12/718496

Inventors:

Kerfegar Khurshed Katrak - Kalamazoo MI, US
Jeffrey Philip Hawarden - Lancashire, GB
Steven Harvey Lapointe - Plainwell MI, US
Eric Allen Metheny - Coldwater MI, US
Todd William Fritz - Kalamazoo MI, US
John Kimmel Vandervoort - Delton MI, US

Assignee:

Eaton Corporation - Cleveland OH

International Classification:

F16H 61/12

US Classification:

701 62, 701 58, 701 68, 477906, 74335

Abstract:

An exemplary system includes at least one valve configured to control fluid flow in a dual-clutch transmission system. A solenoid is operably connected to the at least one valve and configured to move the valve to a plurality of positions. A primary processing unit is in communication with the solenoid and configured to determine an intended position of the valve. A controller is configured to receive the intended position of the valve from the primary processing unit and generate a primary control signal associated with the intended position of the valve. The solenoid is configured to move the valve to the intended position based on the primary control signal. A secondary processing unit is configured to receive information from the primary processing unit and prevent the primary control signal from controlling the solenoid if the primary processing unit is unable to control the solenoid.

US Patent:

52528618, Oct 12, 1993

Filed:

Jul 18, 1991

Appl. No.:

7/732015

Inventors:

Jon A. Steeby - Schoolcraft MI
Steven H. LaPointe - Portage MI

Assignee:

Eaton Corporation - Cleveland OH

International Classification:

F02N 1700
F02P 900

US Classification:

307 106

Abstract:

In a vehicle in which the engine is started from a battery and in which a safety interlock prevents starting if the transmission is not in neutral, the safety interlock is of a type that latches into a condition that enables cranking to continue even when the battery voltage becomes so low that some of the control circuits would not work properly. The interlock is latched when a start command occurs if the transmission is in neutral and the clutch is disengaged. The interlock remains latched until the start command ceases. Limited automatic control of the engine's throttle can also be provided during cranking. If desired, the safe status of the transmission and clutch can continue to be monitored during the cranking and the interlock can be unlatched if the transmission or clutch becomes engaged.