Title: Valve train system for an internal combustion engine

Abstract

A valve train system for an internal combustion engine includes an exhaust valve moveable between an exhaust closed position and an exhaust open position. A camshaft includes a main exhaust lobe for moving the exhaust valve between the exhaust closed position and the exhaust open position for expelling exhaust constituents from the combustion chamber and an exhaust rebreath lobe for moving the exhaust valve between the exhaust closed position and the exhaust open position for allowing exhaust constituents into the combustion chamber. A two-step device is provided for transmitting motion from the camshaft to the exhaust valve and is switchable between a motion transmitting position and a motion preventing position such that the motion transmitting position allows motion to be transmitted from the exhaust rebreath lobe to the exhaust valve and the motion preventing position prevents motion from being transmitted from the exhaust rebreath lobe to the exhaust valve.

Inventors:

Knauf, Michael B.; Sellnau, Mark C.

Issue Date:

2017-09-19

Research Org.:

Delphi Technologies, Inc., Troy, MI (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1532017

Patent Number(s):

9765658

Application Number:

13/038,418

Assignee:

Delphi Technologies, Inc. (Troy, MI)

Patent Classifications (CPCs):

F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01L - CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES

F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02D - CONTROLLING COMBUSTION ENGINES

Show more

F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01L - CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES

F01L1/185 - {Overhead end-pivot rocking arms}
F01L1/267 - {with means for varying the timing or the lift of the valves}
F01L13/0021 - {by modification of rocker arm ratio}
F01L13/0036 - {the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction}
F01L2800/10 - Providing exhaust gas recirculation [EGR]

F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02D - CONTROLLING COMBUSTION ENGINES

F02D13/0211 - {the change of valve timing is caused by the change in valve lift, i.e. both valve lift and timing are functionally related}
F02D13/0219 - {by shifting the phase, i.e. the opening periods of the valves are constant}
F02D13/0242 - {Variable control of the exhaust valves only}
F02D13/0257 - {Independent control of two or more intake or exhaust valves respectively, i.e. one of two intake valves remains closed or is opened partially while the other is fully opened}
F02D13/0273 - {Multiple actuations of a valve within an engine cycle}

F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02M - SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF

F02M26/01 - Internal exhaust gas recirculation, i.e. wherein the residual exhaust gases are trapped in the cylinder or pushed back from the intake or the exhaust manifold into the combustion chamber without the use of additional passages

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

Y02T10/12 - Technologies for the improvement of indicated efficiency of a conventional ICE

Show less

DOE Contract Number:  

EE0003258

Resource Type:

Patent

Resource Relation:

Patent File Date: 2011-03-02

Country of Publication:

United States

Language:

English