Title:
AN ELECTRICAL CONTROL CIRCUIT AND METHOD
Document Type and Number:
WIPO Patent Application WO2003029623
Kind Code:
A3
Abstract:
Systems, methods, and apparatus, consistent with principles of the present invention, allow an unmodified device, for example, dc starter motor (230), that normally operates at a first voltage (108) to function in an electrical system providing a second voltage (109), which is different from the first voltage, and received from the power source (105). A device actuator (135), such as a solenoid, is controlled using the second voltage (109). The first voltage (109) is produced and supplied to the device (130) in response to a first action of the actuator, for example, to the device (130) in response to a second action of the actuator (135), for example, upon solenoid retraction after engine cranking.
Inventors:
FULTON DAVID A (US)
JOHNSTON RALPH H (US)
JOHNSTON RALPH H (US)
Application Number:
PCT/US2002/031196
Publication Date:
December 11, 2003
Filing Date:
October 01, 2002
Export Citation:
Assignee:
CUMMINS INC (US)
FULTON DAVID A (US)
JOHNSTON RALPH H (US)
FULTON DAVID A (US)
JOHNSTON RALPH H (US)
International Classes:
F02N11/08; F02N11/14; G05F1/10; H02P5/00; F02B; (IPC1-7): H02P5/06; H02P5/00
Foreign References:
| US6281646B1 | 2001-08-28 | |||
| US4380724A | 1983-04-19 | |||
| US4656404A | 1987-04-07 | |||
| US5880565A | 1999-03-09 |
Download PDF:
Previous Patent: MICROWAVE SYSTEM USED FOR HEATING SILICON CARBIDE FILTER IN DIESEL ENGINE EXHAUST SYSTEM
Next Patent: WO/2003/029624
Next Patent: WO/2003/029624