| Patent Number |
Title Of Patent |
Date Issued |
| RE39598 |
Variable resistance shift rail detent assembly and shift control method employing same |
May 1, 2007 |
| A mechanical transmission system (10) is provided with a detent mechanism (156/172, 186/196) for applying a selectively variable detent resistance to disengagement of an engaged gear ratio. To provide resistance to shift lever (31) induced jumpout when no intent to shift is sensed, a gre |
| RE38615 |
System and method for decreasing ratio changing time in electronically enhanced powertrain syste |
October 12, 2004 |
| A system and method for decreasing the time required to complete a ratio change in an electronically enhanced powertrain system is provided. The powertrain system includes a number of devices for providing a retarding torque to engine rotation to increase the decay rate of the engine spe |
| RE34260 |
Dual pressure pressurized fluid actuated shifting mechanism |
May 25, 1993 |
| A control (220) for providing a dual pressure source (236) of pressurized fluid to a pressurized fluid operated shift actuator (30) for a mechanical change gear transmission (202) is provided. |
| 7121977 |
Throttle ramp rate control system for a vehicle |
October 17, 2006 |
| A system and method for controlling a throttle ramp rate of a vehicle. According to an embodiment of the invention, the controlling of a throttle ramp rate of a vehicle is accomplished by determining the target engine speed for a vehicle during a vehicle launch. If it is determined t |
| 6984192 |
Throttle ramp rate control system for a vehicle |
January 10, 2006 |
| A system and method for controlling a throttle ramp rate of a vehicle. According to an embodiment of the invention, the controlling of a throttle ramp rate of a vehicle is accomplished by determining the target engine speed for a vehicle during a vehicle launch. If it is determined t |
| 6962551 |
Automated transmission system control with zero engine flywheel torque determination |
November 8, 2005 |
| A control system/method for an at least partially automated transmission system (100) includes means to determine engine fueling required to cause a gross engine output torque (T.sub.EG (for zero flywheel torque)) resulting in zero flywheel torque (T.sub.FW =0). The engine (102) is c |
| 6880687 |
Transmission system and method of operation to accomodate engagement of centrifugal clutch |
April 19, 2005 |
| A vehicular transmission system is disclosed that includes an engine, a transmission having an input shaft, a master friction clutch for drivingly connecting the engine to the transmission, an inertia brake for selectively controlling rotation of the input shaft, and at least one con |
| 6561948 |
Control for transmission system utilizing centrifugal clutch |
May 13, 2003 |
| A control system/method for controlling a vehicle drivetrain (10) including an engine (18), a transmission (12) and, a centrifugal clutch (20) for drivingly coupling the engine output (136) to the transmission input shaft (28) during vehicle launch. A system controller (50) issues comman |
| 6539820 |
Method and system for transmission utilizing centrifugal clutch to overcome transmission tooth-b |
April 1, 2003 |
| A control system/method controls a vehicular automated transmission system so as to overcome a tooth butt condition. The automated transmission system including an internal combustion engine having an engine output member, a multiple speed change gear transmission having an input shaft, |
| 6500093 |
Automated transmission system control with zero engine flywheel torque determination |
December 31, 2002 |
| A control system/method for an at least partially automated transmission system (100) includes means to determine engine fueling required to cause a gross engine output torque (T.sub.EG (for zero flywheel torque)) resulting in zero flywheel torque (T.sub.FW =0). The engine (102) is c |
| 6461274 |
Automated transmission system control with zero engine flywheel torque determination |
October 8, 2002 |
| A control system/method for an at least partially automated transmission system (100) includes means to determine engine fueling required to cause a gross engine output torque (T.sub.EG (for zero flywheel torque)) resulting in zero flywheel torque (T.sub.FW =0). The engine (102) is c |
| 6358183 |
System/method for lever shifting of a controller-assisted, manually shifted transmission |
March 19, 2002 |
| A control system/method for a controller-assisted, manually shifted transmission system (10) senses incomplete jaw clutch engagement (FIGS. 7A and 7B) and causes the engine to dither about zero driveline torque to allow the vehicle operator to fully engage (FIG. 7C) the engaging jaw |
| 6233512 |
Method/system for controlling upshifting in an automated mechanical transmission system |
May 15, 2001 |
| A control system/method to minimize unwanted multiple upshifts in an automated mechanical transmission system (12). After a full-throttle upshift (54A), the engine speeds at which upshifts are commanded are increased from a default value (54) to a modified value (72) until the occurr |
| 6067871 |
Variable resistance shift rail detent assembly and shift control method employing same |
May 30, 2000 |
| A mechanical transmission system (10) is provided with a detent mechanism (156/172, 186/196) for applying a selectively variable detent resistance to disengagement of an engaged gear ratio. To provide resistance to shift lever (31) induced jumpout when no intent to shift is sensed, a gre |
| 6042507 |
Torque converter lockup control |
March 28, 2000 |
| A control for providing a smooth, high quality torque converter lockup event in an automated mechanical transmission system (10) including a fuel-controlled engine (12) and a mechanical transmission (14) drivingly coupled by a torque converter and torque converter lockup clutch assembly |
| 6015366 |
Vehicular semi-automatic shift implementation system for lever-shifted, splitter-type, compound |
January 18, 2000 |
| A semi-automatic shift implementation system (100) for a lever-shifted mechanical transmission (10) includes an intent-to-shift sensor (122), such as an intent-to-shift button (120). Upon sensing an intent to shift, a controller (146) will cause the engine to be fueled to minimize to |
| 5910069 |
Transmission system control system/method including adaptive control for engine deceleration dev |
June 8, 1999 |
| A control system/method for controlling engine brake (50) assisted upshifts in a vehicular, at least partially automated transmission system (10). A value representing expected engine brake turn-off reaction time (T.sub.REACTION) is adjusted as a function of sensed engine deceleration |
| 5904635 |
Partially automated lever-shifted mechanical transmission system |
May 18, 1999 |
| A partially automated transmission system (100) and method for controlling same is provided. The system includes a manually shifted splitter-type transmission (10) having a spatter section (14) and a manually shifted main section (12). The splitter section is controlled by a splitter |
| 5842376 |
System and method for decreasing ratio changing time by actuating inertia brake while the master |
December 1, 1998 |
| A system and method for decreasing the time required to complete a ratio change in an electronically enhanced powertrain system is provided. The powertrain system includes a number of devices for providing a retarding torque to engine rotation to increase the decay rate of the engine spe |
| 5655407 |
System and method for decreasing ratio changing time in electronically enhanced powertrain syste |
August 12, 1997 |
| A system and method for decreasing the time required to complete a ratio change in an electronically enhanced powertrain system is provided. The powertrain system includes a number of devices for providing a retarding torque to engine rotation to increase the decay rate of the engine spe |
| 5533946 |
Engine deceleration determination method/system for updating a control parameter |
July 9, 1996 |
| An adaptive control system/method for an at least partially automated vehicular mechanical transmission system (10) is provided for determining the value of a control parameter (dES/dt) indicative of deceleration of the vehicular engine (E) under minimal fueling. |
| 5528950 |
Transmission inertia brake with ball ramp actuator |
June 25, 1996 |
| An inertia brake is coupled to a rotating shaft of a vehicle transmission where a ball ramp actuator energized by an electrical coil is used to load a clutch pack which frictionally creates a braking torque on the rotating shaft to facilitate synchronous gear engagement. A control system |
| 5517876 |
Transmission spring loaded shift device |
May 21, 1996 |
| A transmission shifting system for a gear change transmission where an actuator responding to a control signal is used to axially displace a secondary shift rail thereby preloading a spring acting upon a primary shift rail where a coupling element permits relative motion between the |
| 5517411 |
Neutral attainment control system/method for controlling shifting in vehicular automated mechani |
May 14, 1996 |
| A robust engine fueling control is provided for assuring neutral attainment in a vehicular automated mechanical transmission system (10) having a manually controlled master clutch (16). Upon sensing a requirement for a shift into transmission neutral, the disengaging jaw clutch members |
| 5508916 |
Control for engagement of positive clutches in automated mechanical transmission systems |
April 16, 1996 |
| A control method/system for controlling engagement of a target gear ratio (GR.sub.T)in a vehicular automated mechanical transmission system (10) is provided. The control causes engine speed (ES) to be alternately greater than and then less than synchronous engine speed (ES=IS=OS*GR.sub.T |
| 5491630 |
Method/system for resetting the value of a control parameter indicative of gross combined weight |
February 13, 1996 |
| A system/method of resetting the value of a control parameter (GCW.sub.CP indicative of vehicular gross combined weight and determined as a filtered/averaged value, to a predetermined default value, or to a test value, upon sensing vehicle operating conditions (OS=Oand t>REF) deemed |
| 5489247 |
Adaptive shift control method/system for modifying engine delay rate or vehicle coast decelerati |
February 6, 1996 |
| An adaptive control system/method for an at least partially automated mechanical transmission system (10) is provided for determining if selected upshifts into a target gear ratio are feasible (208) or not feasible (210) under current vehicle operating conditions and for prohibiting |
| 5441464 |
Non-power downshift throttle recovery |
August 15, 1995 |
| A non-power downshift throttle recovery control method/system is provided for vehicular automated mechanical transmission systems of the type including a multiple-speed mechanical transmission (10) coupled to an electronically controlled engine (E) by a master clutch (C). The transmi |
| 5335566 |
Shift control method/system |
August 9, 1994 |
| A control system/method for an at least partially automated mechanical transmission system (10) is provided for determining if selected upshifts into a target gear ratio are feasible (208) or not feasible (210) under current vehicle operating conditions and for prohibiting the initiation |
| 5272939 |
Shift enable control method/system |
December 28, 1993 |
| A control system/method for an at least partially automated mechanical transmission system (10) is provided for determining if selected upshifts into a target gear ratio are acceptable (208) or not acceptable (210) under current vehicle operating conditions and for prohibiting the in |
| 5261298 |
Enhanced semi-automated mechanical transmission system |
November 16, 1993 |
| A control system (104)/method for semi-automatically executing manually or automatically selected upshifts and downshifts of a mechanical transmission system (10) is provided. The control system includes a central processing unit (106) for receiving input signals indicative of transm |
| 5186066 |
Dual pressure pressure regulator |
February 16, 1993 |
| An auxiliary transmission section (14) shift control system (230)/method is provided which includes a control member (234) to prevent auxiliary section synchronized clutch (92, 128) damage if the main transmission section (12) is engaged during an auxiliary section shift. Upon sensing |
| 5081588 |
Start from stop control method |
January 14, 1992 |
| A control system/control method for controlling the jaw clutch engagement and at least partially automated multiple speed change gear mechanical transmission (10) is provided. The control includes a central processing unit (106) for receiving signals indicative of transmission input shaf |
| 5063511 |
Enhanced missed shift recovery for semi-automatic shift implementation control system |
November 5, 1991 |
| A control system (104) for controlling execution of selected upshifts and downshifts of a mechanical transmission system (10) is provided. The control system includes a central processing unit (106) for receiving input signals indicative of transmission input shaft (16) and output shaft |
| 4991099 |
Control system/method for controlling shifting of a range type compound transmission using input |
February 5, 1991 |
| A control system/method for controlling the automatic or semi-automatic shifting of a range type compound transmission (10) is provided. The control utilizes a processing unit (106) requiring only two speed inputs, indicative of input shaft (16) and mainshaft (28) rotational speeds, to |
| 4928544 |
Dual pressure pressurized fluid actuated shifting mechanism |
May 29, 1990 |
| A control (220) for providing a dual pressure source (236) of pressurized fluid to a pressurized fluid operated shift actuator (30) for a mechanical change gear transmission (202) is provided. |
| 4576065 |
Automatic transmission controls with multiple downshift off-highway mode |
March 18, 1986 |
| An improved control system for an automatic change gear transmission (10) driven by a throttle (18) controlled engine (12) is provided. The control system includes a processing unit (30) for receiving inputs indicating at least throttle position (18), engine speed (20) and vehicle speed |
