The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 14, 2006
Filed:
Feb. 21, 2003
Alan R. Stockner, Metamora, IL (US);
Rene Schulz, Herdorf, DE;
Olaf Ohligschlaeger, Herdorf, DE;
Ronald D. Shinogle, Peoria, IL (US);
Bernhard Kirsch, Herdorf, DE;
Clifford E. Cotton, Iii, Pontiac, IL (US);
Alan R. Stockner, Metamora, IL (US);
Rene Schulz, Herdorf, DE;
Olaf Ohligschlaeger, Herdorf, DE;
Ronald D. Shinogle, Peoria, IL (US);
Bernhard Kirsch, Herdorf, DE;
Clifford E. Cotton, III, Pontiac, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
Electrically controlled fuel injection systems should be able to operate at low voltage. In order to operate an electrically controlled fuel injection system at low voltage, the voltage available to an electrical actuator is monitored. The electrical actuator is coupled to a valve positioned within a passageway in which high pressure actuation fluid flows to and from an hydraulically actuated device, such as a fuel injector and/or an engine brake. If the voltage available to the electrical actuator falls below a predetermined voltage, the pressure differential across the valve is reduced. Although the principal application of the present invention is in the fuel injection system, the present invention has application in any electrically controlled fluid system at low voltage.