System, method, and apparatus for operating a high efficiency, high output transmission

• US 10,473,542 B2
• Filed: 07/28/2017
• Issued: 11/12/2019
• Est. Priority Date: 12/22/2016
• Status: Active Grant

• Current Assignee: Eaton Cummins Automated Transmission Technologies, LLC
• Original Assignee: Eaton Cummins Automated Transmission Technologies, LLC
• Inventors: Hawarden, Jeff, Wang, Yeidei, Connolly, Thomas, Chen, Sipei, Jackson, Graeme Andrew
• Primary Examiner(s): Hollington, Octavia
• Application Number:
  US15/663,235
• Publication Number:
  US 20180180500A1
• Time in Patent Office: 837 Days
• Field of Search: 73862331
• CPC Class Codes: B60K 17/28 characterised by arrangement, location, or type of power take-off
• CPC Class Codes: B60W 10/02 including control of driveline clutches
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/11 Stepped gearings
• CPC Class Codes: B60W 10/111 with separate change-speed gear trains arranged in series
• CPC Class Codes: B60W 10/115 with planetary gears
• CPC Class Codes: B60W 10/196 acting within the driveline, e.g. retarders
• CPC Class Codes: B60W 2050/0058 Signal modulation for data transmission
• CPC Class Codes: B60W 2050/0215 Sensor drifts or sensor failures
• CPC Class Codes: B60W 2300/147 Road trains
• CPC Class Codes: B60W 2510/0208 Clutch engagement state, e.g. engaged or disengaged
• CPC Class Codes: B60W 2510/0225 Clutch actuator position
• CPC Class Codes: B60W 2510/0275 Clutch torque
• CPC Class Codes: B60W 2510/0657 Engine torque
• CPC Class Codes: B60W 2510/101 Transmission neutral state
• CPC Class Codes: B60W 2510/1015 Input shaft speed, e.g. turbine speed
• CPC Class Codes: B60W 2510/102 Input speed change rate
• CPC Class Codes: B60W 2510/105 Output torque
• CPC Class Codes: B60W 2510/107 Temperature
• CPC Class Codes: B60W 2510/108 pressure of control fluid
• CPC Class Codes: B60W 2530/10 : Weight
• CPC Class Codes: B60W 2530/16 : Driving resistance
• CPC Class Codes: B60W 2552/15 : Road slope, i.e. the inclination of a road segment in the longitudinal direction
• CPC Class Codes: B60W 2710/022 : Clutch actuator position
• CPC Class Codes: B60W 2710/025 : Clutch slip, i.e. difference between input and output speeds
• CPC Class Codes: B60W 2710/027 : Clutch torque
• CPC Class Codes: B60W 2710/0666 : Engine torque
• CPC Class Codes: B60W 2710/1005 : Transmission ratio engaged
• CPC Class Codes: B60W 2710/1083 : pressure of control fluid
• CPC Class Codes: B60W 2710/182 : Brake pressure, e.g. of fluid or between pad and disc
• CPC Class Codes: B60W 30/18027 : Drive off, accelerating from standstill
• CPC Class Codes: B60W 30/188 : Controlling power parameters of the driveline, e.g. determining the required power
• CPC Class Codes: B60W 30/19 : Improvement of gear change, e.g. by synchronisation or smoothing gear shift
• CPC Class Codes: B60W 40/13 : Load or weight
• CPC Class Codes: B60W 50/00 : Details of control systems for road vehicle drive control not related to the control of a particular sub-unit , e.g. process diagnostic or vehicle driver interfaces
• CPC Class Codes: B60W 50/0205 : Diagnosing or detecting failures; Failure detection models
• CPC Class Codes: B60W 50/035 : Bringing the control units into a predefined state, e.g. giving priority to particular actuators
• CPC Class Codes: B62D 6/10 : characterised by means for sensing or determining torque
• CPC Class Codes: F16D 25/04 : in which the fluid actuates an elastic clutching, i.e. elastic actuating member, e.g. a diaphragm or a pneumatic tube F16D25/02 takes precedence; coupling using a pneumatic tube F16D3/82
• CPC Class Codes: F16D 25/126 : adjustment for wear or play
• CPC Class Codes: F16D 25/14 : Fluid pressure control
• CPC Class Codes: F16D 2500/1028 : Pneumatic
• CPC Class Codes: F16D 2500/10412 : Transmission line of a vehicle
• CPC Class Codes: F16D 2500/1045 : Friction clutch
• CPC Class Codes: F16D 2500/1112 : Heavy vehicle
• CPC Class Codes: F16D 2500/3021 : Angle
• CPC Class Codes: F16D 2500/30415 : Speed of the input shaft
• CPC Class Codes: F16D 2500/30421 : Torque of the output shaft
• CPC Class Codes: F16D 2500/30426 : Speed of the output shaft
• CPC Class Codes: F16D 2500/30807 : Estimation of the engaged transmission ratio
• CPC Class Codes: F16D 2500/30808 : Detection of transmission in neutral
• CPC Class Codes: F16D 2500/30816 : Speed of the input shaft
• CPC Class Codes: F16D 2500/30818 : Speed change rate of the input shaft
• CPC Class Codes: F16D 2500/7041 : Position
• CPC Class Codes: F16D 48/066 : Control of fluid pressure, e.g. using an accumulator F16D48/062, F16D48/068 take precedence
• CPC Class Codes: F16H 2003/0931 : each countershaft having an output gear meshing with a single common gear on the output shaft
• CPC Class Codes: F16H 2037/0873 : with switching, e.g. to change ranges
• CPC Class Codes: F16H 2037/0893 : characterised in the ratio of the continuously variable transmission is different from zero when the output shaft speed is zero
• CPC Class Codes: F16H 2047/045 : the fluid gearing comprising a plurality of pumps or motors
• CPC Class Codes: F16H 2057/0206 : for commercial vehicles, e.g. buses or trucks
• CPC Class Codes: F16H 2057/02086 : Measures for reducing size of gearbox, e.g. for creating a more compact transmission casing
• CPC Class Codes: F16H 2059/144 : characterised by change between positive and negative drive line torque, e.g. torque changes when switching between coasting and acceleration
• CPC Class Codes: F16H 2059/147 : Transmission input torque, e.g. measured or estimated engine torque
• CPC Class Codes: F16H 2059/148 : Transmission output torque, e.g. measured or estimated torque at output drive shaft
• CPC Class Codes: F16H 2059/462 : Detecting synchronisation, i.e. speed difference is approaching zero
• CPC Class Codes: F16H 2059/525 : the machine undergoing additional towing load, e.g. by towing a trailer
• CPC Class Codes: F16H 2059/663 : Road slope
• CPC Class Codes: F16H 2059/6807 : Status of gear-change operation, e.g. clutch fully engaged
• CPC Class Codes: F16H 2059/6823 : Sensing neutral state of the transmission
• CPC Class Codes: F16H 2059/683 : Sensing pressure in control systems or in fluid controlled devices, e.g. by pressure sensors for hydrostatic transmissions F16H2059/6861
• CPC Class Codes: F16H 2059/725 : Sensing or calculating temperature of friction devices, e.g. clutches to prevent overheating of friction linings
• CPC Class Codes: F16H 2061/0411 : by control of shaft brakes
• CPC Class Codes: F16H 2061/047 : by preventing or solving a tooth butt situation upon engagement failure due to misalignment of teeth
• CPC Class Codes: F16H 2061/1284 : the failing part is a sensor
• CPC Class Codes: F16H 2061/2853 : Electromagnetic solenoids
• CPC Class Codes: F16H 2061/308 : Modular hydraulic shift units, i.e. preassembled actuator units for select and shift movements adapted for being mounted on transmission casing
• CPC Class Codes: F16H 2063/005 : Preassembled gear shift units for mounting on gear case for hydraulic shift units F16H2061/308
• CPC Class Codes: F16H 2063/3093 : Final output elements, i.e. the final elements to establish gear ratio, e.g. dog clutches or other means establishing coupling to shaft fluid actuated clutches F16H63/3026; electromagnetic clutches F16H2063/3046
• CPC Class Codes: F16H 2200/0004 : comprising a power take off shaft
• CPC Class Codes: F16H 2200/0078 : the gear ratio comprising twelve or more forward speeds
• CPC Class Codes: F16H 2200/2005 : with one sets of orbital gears
• CPC Class Codes: F16H 2312/022 : Preparing to drive off
• CPC Class Codes: F16H 3/091 : including a single countershaft
• CPC Class Codes: F16H 3/093 : with two or more countershafts
• CPC Class Codes: F16H 3/097 : the input and output shafts being aligned on the same axis
• CPC Class Codes: F16H 3/16 : essentially with both gears that can be put out of gear and continuously-meshing gears that can be disengaged from their shafts
• CPC Class Codes: F16H 3/64 : composed of a number of gear trains, the drive always passing through all the trains, each train having not more than one connection for driving another train
• CPC Class Codes: F16H 3/78 : Special adaptation of synchronisation mechanisms to these gearings
• CPC Class Codes: F16H 37/043 : without gears having orbital motion
• CPC Class Codes: F16H 37/046 : with an additional planetary gear train, e.g. creep gear, overdrive
• CPC Class Codes: F16H 37/0853 : CVT using friction between rotary members having a first member of uniform effective diameter cooperating with different parts of a second member
• CPC Class Codes: F16H 57/0006 : Vibration-damping or noise reducing means specially adapted for gearings devices for varying tension of belts, ropes or chains with damping means F16H7/0829; toothed members with construction providing vibration damping F16H55/14; reducing vibrations or noise of the gearbox casing F16H57/028; suppression of vibrations or noise of gear selectors F16H59/0208; control of hydrostatic fluid gearing preventing or reducing vibrations or noise F16H61/4183
• CPC Class Codes: F16H 57/02 : Gearboxes; Mounting gearing therein
• CPC Class Codes: F16H 57/02004 : the gears being positioned relative to one another by rolling members or by specially adapted surfaces on the gears, e.g. by a rolling surface with the diameter of the pitch circle
• CPC Class Codes: F16H 57/021 : Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
• CPC Class Codes: F16H 57/032 : characterised by the materials used
• CPC Class Codes: F16H 57/0423 : Lubricant guiding means mounted or supported on the casing, e.g. shields or baffles for collecting lubricant, tubes or pipes means for guiding lubricant into an axial channel of a shaft F16H57/0426; lubrication by injection, injection nozzles or tubes therefore F16H57/0456
• CPC Class Codes: F16H 57/043 : within rotary parts, e.g. axial channels or radial openings in shafts
• CPC Class Codes: F16H 57/0441 : Arrangements of pumps
• CPC Class Codes: F16H 57/0471 : Bearing
• CPC Class Codes: F16H 57/0478 : Synchromesh devices
• CPC Class Codes: F16H 57/0484 : with variable gear ratio or for reversing rotary motion
• CPC Class Codes: F16H 57/0494 : with variable gear ratio or for reversing rotary motion
• CPC Class Codes: F16H 57/12 : Arrangements for adjusting or for taking-up backlash not provided for elsewhere
• CPC Class Codes: F16H 59/0204 : for automatic transmissions with means for range selection and manual shifting, e.g. range selector with tiptronic
• CPC Class Codes: F16H 59/14 : Inputs being a function of torque or torque demand
• CPC Class Codes: F16H 59/38 : of gearing elements
• CPC Class Codes: F16H 59/40 : Output shaft speed
• CPC Class Codes: F16H 59/46 : dependent on a comparison between speeds
• CPC Class Codes: F16H 59/52 : dependent on the weight of the machine, e.g. change in weight resulting from passengers boarding a bus
• CPC Class Codes: F16H 59/70 : dependent on the ratio established
• CPC Class Codes: F16H 61/0021 : Generation or control of line pressure
• CPC Class Codes: F16H 61/0213 : characterised by the method for generating shift signals
• CPC Class Codes: F16H 61/04 : Smoothing ratio shift
• CPC Class Codes: F16H 61/0403 : Synchronisation before shifting
• CPC Class Codes: F16H 61/06 : by controlling rate of change of fluid pressure
• CPC Class Codes: F16H 61/08 : Timing control
• CPC Class Codes: F16H 61/143 : using electric control means
• CPC Class Codes: F16H 61/30 : Hydraulic or pneumatic motors or related fluid control means therefor
• CPC Class Codes: F16H 61/682 : with interruption of drive
• CPC Class Codes: F16H 61/705 : using hydraulic and mechanical control means
• CPC Class Codes: F16H 63/24 : each of the final output mechanisms being moved by only one of the various final actuating mechanisms constructional features of the final output mechanisms F16H63/30
• CPC Class Codes: F16H 63/502 : for smoothing gear shifts
• CPC Class Codes: G01L 3/105 : involving inductive means G01L3/102, G01L3/104 take precedence
• CPC Class Codes: H04B 10/0775 : Performance monitoring and measurement of transmission parameters
• CPC Class Codes: H04J 3/125 : One of the channel pulses or the synchronisation pulse is also used for transmitting monitoring or supervisory signals

Abstract

A transmission includes an input shaft and an output shaft, the input shaft selectively accepting a torque input from a prime mover, and the output shaft selectively providing torque output to a driveline. A controller determines a shaft displacement angle representing an angle value of rotational displacement difference between at least two shafts of the transmission, and performs a transmission operation responsive to the shaft displacement angle.

Claims

1. A system, comprising:

a transmission comprising an input shaft and an output shaft, the input shaft selectively accepting a torque input from a prime mover, and the output shaft selectively providing a torque output to a driveline; and

a controller comprising;

a shaft displacement circuit structured to interpret a shaft displacement angle, the shaft displacement angle comprising an angle value representative of a rotational displacement difference between at least two shafts;

a shift state description circuit structured to determine that a synchronizer is unblocked in response to the angle value;

a displacement response circuit structured to provide a shift engagement command in response to the determining the synchronizer is unblocked; and

a shift actuator responsive to the shift engagement command.

2. The system of claim 1, further comprising:

the transmission further comprising a countershaft selectively coupled to the input shaft at a first end, and selectively coupled to the output shaft at a second end; and

wherein the shaft displacement angle comprises an input angle, wherein the input angle comprises an angle value representative of the rotational displacement difference between the input shaft and the countershaft.

3. The system of claim 2, wherein the controller further comprises a shift actuation circuit further structured to provide a shift opposition command in response to the determining the synchronizer is unblocked, and wherein the shift actuator is further responsive to the shift opposition command.

4. The system of claim 3, wherein the shift engagement command comprises an increased actuation pressure relative to a decreased actuation pressure applied during a synchronization operation.

5. The system of claim 3, wherein the shift opposition command comprises an increased opposition pressure to a movement of the shift actuator relative to a synchronization opposition pressure, the synchronization opposition pressure comprising an opposition pressure during at least one of a synchronization operation or a synchronizer approach operation.

6. The system of claim 5, wherein the increased opposition pressure comprises an amount of opposition pressure selected to reduce a final engagement velocity of the shift actuator.

7. The system of claim 1, wherein the shift state description circuit is further structured to determine the synchronizer is unblocked in response to a rate of change of the input angle.

8. The system of claim 7, wherein the shift state description circuit is further structured to determine the synchronizer is unblocked in response to the rate of change of the input angle transitioning from a first rate of change to a second rate of change, wherein the first rate of change is associated with a synching position of the shift actuator, and wherein the second rate of change is associated with synchronizer unblock position of the shift actuator.

9. A system, comprising:

a transmission comprising;

an input shaft and an output shaft, the input shaft selectively accepting a torque input from a prime mover, and the output shaft selectively providing a torque output to a driveline;

a countershaft selectively coupled to the input shaft at a first end, and selectively coupled to the output shaft at a second end;

wherein the countershaft is selectively coupled to the output shaft at the second end via a main shaft selectively coupled to the output shaft; and

a controller comprising;

a shaft displacement circuit structured to interpret a shaft displacement angle, the shaft displacement angle comprising an angle value representative of a rotational displacement difference between at least two shafts of the transmission, and wherein the shaft displacement angle comprises at least one angle selected from the angles consisting of;

an input angle comprising an angle value representative of a rotational displacement difference between the input shaft and the countershaft;

a main box angle comprising a rotational displacement difference between the countershaft and the output shaft;

an output angle comprising a rotational displacement difference between the input shaft and the output shaft; and

a torque input determination circuit structured to determine a prime mover torque value in response to the shaft displacement angle and

a displacement response circuit structured to provide, in response to the prime mover torque value, a prime mover torque pulse command to alter gear mesh orientation.

10. The system of claim 9, wherein the torque input determination circuit is further structured to determine when the prime mover torque value is zero.

11. The system of claim 9, wherein the displacement response circuit is further structured to provide a gear disengage command in response to the prime mover torque value, and wherein the system further comprises a shift actuator responsive to the gear disengage command.

12. The system of claim 9, wherein the displacement response circuit is further structured to provide, in response to the prime mover torque value, at least one of a prime mover torque pulse command or a clutch modulation command.

13. An apparatus, comprising:

a shaft displacement circuit structured to interpret a shaft displacement angle, the shaft displacement angle comprising an angle value representative of a rotational displacement difference between at least two shafts of a transmission;

a shift state description circuit structured to determine that a synchronizer is unblocked in response to the angle value; and

a displacement response circuit structured to provide a shift engagement command in response to the determining the synchronizer is unblocked.

14. The apparatus of claim 13, further comprising a torque input determination circuit structured to determine a prime mover torque value in response to the shaft displacement angle.

15. The apparatus of claim 14, wherein the torque input determination circuit is further structured to determine when the transmission is in one of a zero torque region or an imminent zero torque region.

16. The apparatus of claim 15, wherein the displacement response circuit is further structured to provide a shift pre-load command in response to the determining the transmission is in one of the zero torque region or the imminent zero torque region.

17. The apparatus of claim 14, wherein the displacement response circuit is further structured to provide, in response to the prime mover torque value, a prime mover torque pulse command.

18. The apparatus of claim 17, wherein the torque input determination circuit is further structured to determine when the transmission is in one of a zero torque region or an imminent zero torque region, and wherein the displacement response circuit is further structured to provide the prime mover torque pulse command in response to the one of the zero torque region or the imminent zero torque region.

19. The apparatus of claim 13, the shift state description circuit is further structured to determine a synchronizer is unblocked in response to a rate of change of shaft displacement angle transitioning from a first rate of change to a second rate of change, wherein the first rate of change is associated with a synching position of a shift actuator, and wherein the second rate of change is associated with synchronizer unblock position of the shift actuator.

20. The apparatus of claim 13, further comprising a shift actuation circuit structured to provide a shift opposition command in response to the determining the synchronizer is unblocked, and wherein a shift actuator is further responsive to the shift opposition command.