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:
Jan. 02, 1996
Filed:
Oct. 07, 1994
Applicant:
Inventors:
Haoran Hu, Farmington, CT (US);
John A Konopka, Feeding Hills, MA (US);
Assignee:
Diesel Engine Retarders, Inc., Wilmington, DE (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F01L / ; F02D / ;
U.S. Cl.
CPC ...
123322 ; 25112910 ;
Abstract
In a compression release engine brake for increasing the braking available from an associated internal combustion engine, an electrically controlled hydraulic valve having at least two coils and at least two positions is used to apply high pressure hydraulic fluid to a hydraulic actuator for opening an exhaust valve in the engine when a compression release event in the engine is desired. After each compression release event, the valve is switched to a condition in which it allows hydraulic fluid to drain from the hydraulic actuator, thereby allowing the associated engine exhaust valve to close.