Internal-combustion engines – Accessories – Covers – trays – vibrators – corrosion inhibitors – air filters
Reexamination Certificate
2006-05-16
2006-05-16
Kamen, Noah P. (Department: 3747)
Internal-combustion engines
Accessories
Covers, trays, vibrators, corrosion inhibitors, air filters
Reexamination Certificate
active
07044101
ABSTRACT:
In an internal combustion engine adapted to operate in a cylinder-deactivation mode, a method for controlling the reactivation of a deactivated cylinder includes determining a difference between a torque request from a vehicle operator, and an estimate of a maximum engine torque achievable in cylinder-deactivation mode based at least in part on a current engine speed. The difference is integrated over time to obtain a torque request “error.” A reactivation of the deactivated cylinder is triggered when the torque request error exceeds a first threshold value, which can be a calibrated value, a calibrated value adapted, for example, for driving style, or a value determined from a vehicle operating parameter such as vehicle speed. The use of the torque request error advantageously avoids reactivation of the deactivated cylinders in response to brief transients in the torque request signal that otherwise temporarily exceed the maximum achievable engine output torque.
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: 2004/0244744 (2004-12-01), Falkowski et al.
patent: 2004/0244761 (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. 2001-01-0689 (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 CAFE,” 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 5.71 Hemi Engine Multi -Displacement Cylinder Deactivation System,” SAE Publication No. 2004-01-2106 (New York, NY, May 7, 2004).
Bonne Michael A
Duty Mark J
Prucka Michael J
DaimlerChrysler Corporation
Kamen Noah P.
Smith Ralp E.
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