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Class Information
Number: 123/320
Name: Internal-combustion engines > Engine speed regulator > Responsive to deceleration mode (e.g., engine acting as a brake)
Description: Subject matter wherein the speed regulator senses high manifold vacuum, closed throttle, and rpm above idle and responds to cause or attempt to cause a further reduction in engine rpm.


Sub-classes under this class:

Class Number Class Name Patents
123/327 Auxiliary air fed to the engine 109
123/325 Deceleration responsive cutoff of fuel to engine (e.g., pollution control) 179
123/323 Exhaust throttling or blocking 179
123/329 Having means to retard spark (e.g., ignition timing) 20
123/328 Idle jet bypassed by a slight opening of the throttle 22
123/324 Part of the air or combustible mixture to the engine cylinder omitted 25
123/321 Valve timing altering means (e.g., axially sliding cam shaft) 241


Patents under this class:
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Patent Number Title Of Patent Date Issued
7571709 Method for stopping and starting an internal combustion engine having a variable event valvetrain Aug. 11, 2009
7568465 Engine retarder having multiple modes Aug. 4, 2009
7520262 Integrated type engine brake for diesel engine Apr. 21, 2009
7490588 Vehicle control apparatus and method Feb. 17, 2009
7472012 Traction control device Dec. 30, 2008
7415948 Internal combustion engine and method Aug. 26, 2008
7412963 Internal combustion engine including a gas pressure container assigned to the cylinders, and method for operating the engine Aug. 19, 2008
7317984 Engine shut-down for engine having adjustable valve timing Jan. 8, 2008
7178491 Control system and method for engine valve actuator Feb. 20, 2007
7100552 Control system and method for variable valve actuation system Sep. 5, 2006
7077082 System and method for monitoring engine valve actuation Jul. 18, 2006
7004124 Valve strategy for operating a controlled auto-ignition four-stroke internal combustion engine Feb. 28, 2006
7000587 System for changing a selected engine function based on sensed weather conditions Feb. 21, 2006
6986335 Method for operating an internal combustion engine Jan. 17, 2006
6971366 Integral lash adjustor for hydraulic compression engine brake Dec. 6, 2005
6969341 Engine deceleration control system Nov. 29, 2005
6928969 System and method for controlling engine operation Aug. 16, 2005
6907860 Control apparatus and control method for vehicle-mounted internal combustion engine Jun. 21, 2005
6904892 Compression release brake system Jun. 14, 2005
6863047 Method of controlling engine speed during performance shift Mar. 8, 2005
6807938 Post-retard fuel limiting strategy for an engine Oct. 26, 2004
6807929 Engine valve actuation system and method Oct. 26, 2004
6799113 Method and arrangement for controlling the drive unit of a vehicle Sep. 28, 2004
6792904 Method and arrangement for affecting engine braking Sep. 21, 2004
6681740 Injection control pressure strategy during activation of an engine retarder Jan. 27, 2004
6668773 System and method for calibrating variable actuation system Dec. 30, 2003
6497097 Turbocharged engine having engine compression braking control Dec. 24, 2002
6478009 Multicylinder internal combustion engine with an engine braking system Nov. 12, 2002
6474296 Lash adjustment for use with an actuator Nov. 5, 2002
6459981 Process and system for the automated influencing of the vehicle handling of a motor vehicle having an internal combustion engine Oct. 1, 2002
6439195 Valve train apparatus Aug. 27, 2002
6334429 Integrated lost motion rocker brake with control valve for lost motion clip/reset Jan. 1, 2002
6314926 Valve control apparatus Nov. 13, 2001
6223718 Drive unit with an engine and a retarder May. 1, 2001
6216667 Method and device for a supercharged engine brake Apr. 17, 2001
6216668 Engine performance measuring method Apr. 17, 2001
6167877 Method of determining distribution of vapors in the intake manifold of a banked engine Jan. 2, 2001
6050239 Control arrangement for an internal combustion engine Apr. 18, 2000
5794588 Drive unit with an engine and a retarder Aug. 18, 1998
5743232 Drive unit with an engine and a retarder Apr. 28, 1998
5715789 Method for controlling engine for model and device therefor Feb. 10, 1998
5586531 Engine retarder cycle Dec. 24, 1996
5540201 Engine compression braking apparatus and method Jul. 30, 1996
5528500 Programmable high idle set switch and method of operating same Jun. 18, 1996
5479896 Compression release engine brake slave piston drive train Jan. 2, 1996
5386809 Pressure relief valve for compression engine braking system Feb. 7, 1995
5365916 Compression release engine brake slave piston drive train Nov. 22, 1994
5347968 Integral air compression system Sep. 20, 1994
5315974 Internal combustion engine with compressor function May. 31, 1994
5311063 Automatic load speed controller for engine governor May. 10, 1994

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