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. 01, 1991
Filed:
Jan. 11, 1990
Applicant:
Inventors:
Alfred Neitz, Wendelstein, DE;
Joachim Weiss, Oberasbach, DE;
Assignee:
MAN Nutzfahrzeuge Aktiengesellschaft, Munchen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D / ; F02D / ;
U.S. Cl.
CPC ...
123321 ; 123323 ;
Abstract
A method of increasing the exhaust braking power of a four-stroke, reciprocating piston internal combustion engine, whereby in the braking operation, in a first and third stroke air is drawn in via an intake valve, and in a second and fourth stroke the air is compressed and, by partially opening an exhaust valve, is discharged against a damper that is disposed in an exhaust pipe or manifold. In order to increase the final compression pressure, i.e. to increase the energy that is to be applied for the compression, the exhaust valve is briefly opened at both the beginning and the end of the compression stroke.