Torque converter slip control for multi-displacement engine

Details Torque converter slip control for multi-displacement engine Torque converter slip control for multi-displacement engine

2007-10-30

2007-10-30

Le, David D. (Department: 3681)

Interrelated power delivery controls, including engine control

Transmission control

Including fluid drive

C477S052000, C477S053000, C477S066000, C477S067000, C477S068000, C477S106000

Reexamination Certificate

active

11085640

ABSTRACT:
Prior to transitioning a multiple-displacement engine from a full-displacement engine operating mode to a partial-displacement engine operating mode, a base slip rate of a torque converter coupled to the engine engine is increased by a predetermined slip rate offset. The engine is then transitioned to partial-displacement mode upon the earlier of either achieving the desired offset slip rate, or once a maximum time delay has occurred since the slip rate offset was enabled. An offset slip rate is maintained throughout partial-displacement engine operation, and through a transition back to a full-displacement mode. The slip rate offset is removed or disenabled once the engine is again operating in the full-displacement mode. The slip rate offset is either a calibratable constant or is determined as a function of one or more suitable engine or vehicle operating parameters affecting vehicle NVH levels, such as engine speed and vehicle speed.

REFERENCES:
patent: 4585101 (1986-04-01), Danno
patent: 5374224 (1994-12-01), Huffmaster et al.
patent: 5408974 (1995-04-01), Lipinski et al.
patent: 5568795 (1996-10-01), Robichaux et al.
patent: 5611754 (1997-03-01), Haga et al.
patent: 6311670 (2001-11-01), Constancis
patent: 6843752 (2005-01-01), Bolander
patent: 7059998 (2006-06-01), Bolander et al.
patent: 2004/0244744 (2004-12-01), Falkowski et al.
patent: 2004/0244751 (2004-12-01), Falkowski et al.
Bates, B.; Dosdall, J. M.; and Smith, D. H.; “Variable Displacement by Engine Valve Control,” SAE Paper No. 780145 (New York, NY; 1978).
Mueller, Robert S.; and Uitvlugt, Martin W.; “Valve Selector Hardware,” SAE Publication No. 780146 (New York, NY; 1978).
Fukui, Toyoaki; Nakagami, Tatsuro; Endo, Hiroyasu; Katsumoto, Takehiko; and Danno, Yoshiaki; “Mitsubishi Orion-MD—A New Variable Displacement Engine,” SAE Paper No. 831007 (New York, NY; 1983).
Hatano, Kiyoshi; Iida, Kazumasa; Higashi, Hirohumi; and Murata, Shinichi; “Development of a New Multi-Mode Variable Valve Timing Engine,” SAE Paper No. 930878 (New York, NY; 1993).
McElwee, Mark; and Wakeman, Russell; “A Mechanical Valve System with Variable Lift, Duration, and Phase Using a Moving Pivot,” SAE Paper No. 970334 (New York, NY; 1997).
Yacoub, Yasser; and Atkinson, Chris; “Modularity in Spark Ignition Engines: A Review of its Benefits, Implementation and Limitations,” SAE Publication No. 982688 (New York, NY; 1998).
Zheng, Quan; “Characterization of the Dynamic Response of a Cylinder Deactivation Valvetrain System,” SAE Publication No. 2001-01-0669 (New York, NY; 2001).
Leone, T.G.; and Pozar, M.; “Fuel Economy Benefit of Cylinder Deactivation—Sensitivity to Vehicle Application and Operating Constraints,” SAE Paper No. 2001-01-3591 (New York, NY; 2001).
Patton, Kenneth J.; Sullivan, Aaron M.; Rask, Rodney B.; and Theobald, Mark A.; “Aggregating Technologies for Reduced Fuel Consumption: A Review of the Technical Content in the 2002 National Research Council Report on CAFÉ,” SAE Paper No. 2002-01-0628 (New York, NY; 2002).
Falkowski, Alan G.; McElwee, Mark R.; and Bonne, Michael A.; “Design and Development of the Daimlerchrysler 5.7l Hemi Engine Multi -Displacement Cylinder Deactivation System,” SAE Publication No. 2004-01-2106 (New York, NY, May 7, 2004).
2004 Global Powertrain Congress program, Sep. 28-30, 2004, Ford Conference & Event Center, Dearborn, Michigan, USA (9 pages).
Albertson, William, et al [William Albertson, Thomas Boland, Jia-shium Chen, James Hicks, Gregory P. Matthews, Micke McDonald, Sheldon Plaxton, Allen Rayl, Frederick Rozario], “Displacement on Demand for Improved Fuel Economy Without Compromising Performance in GM's High Value Engines,” Powertrain International—2004 Global Powertrain Conference, Saline, Michigan, Sep. 29, 2004.

Affiliated with

Also associated with

Rating

Torque converter slip control for multi-displacement engine does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Torque converter slip control for multi-displacement engine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Torque converter slip control for multi-displacement engine will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3832927