Paul J. Mason - Battle Creek MI Alan C. Stine - Kalamazoo MI Douglas C. Hughes - Wixom MI Karen L. Marx - Clawson MI
Assignee:
Eaton Corporation - Cleveland OH
International Classification:
F16H 5930
US Classification:
477124, 74335
Abstract:
A controller-assisted, manually shifted transmission system ( ) utilizes a shift inhibit mechanism ( ) to inhibit out-of-synchronous shifts and unintended disengagement of ratios. An intent to shift (ITS) and target ratio (GR ) are determined from a shift lever position sensor ( ) and a force sensor ( ).
Timothy J. Morscheck - Portage MI, US Alan C. Stine - Kalamazoo MI, US Joseph D. Reynolds - Climax MI, US James L. Oliver - Orion MI, US
Assignee:
Eaton Corporation - Cleveland OH
International Classification:
F16H 37/02
US Classification:
475208
Abstract:
A dual mode continuously variable transmission for use with motor vehicles includes a transmission input shaft, a transmission output shaft, and a variator disposed between the transmission input shaft and the transmission output shaft. A mixer gear set is operably disposed between the transmission input shaft and the variator output shaft. A clutching element is operably disposed between the input shaft the mixer gear set. The variator is configured to continuously vary a ratio of input torque to output torque between the variator shafts responsive to commands from an electronic control unit. The variator input shaft is drivingly connected to the input shaft and the variator output shaft is drivingly connected to the output shaft. The clutching element selectively connects and disconnects the input shaft and the mixer gear set to operate the transmission in a power splitting mode of operation and a variator only mode of operation. An electronic control unit incorporates logic rules by which the clutching element maintains the transmission in a variator-only mode of operation in a first vehicle speed range, and maintains the transmission in a power splitting mode of operation in a second vehicle speed range greater than the first vehicle speed range.
Automatic Range Up-Shift Control And Method Of Operation
Alan Stine - Kalamazoo MI, US Michael Lemon - Battle Creek MI, US David Wadas - Kalamazoo MI, US Yeidei Wang - Kalamazoo MI, US
International Classification:
B60K041/04
US Classification:
477034000
Abstract:
A control for enhanced range shifting in a computer () assisted vehicular compound transmission having a main section (A) shifted by a manually operated shift lever () and a range section (B) shifted in response to operation of a range shift selector, such as sensing shift lever () passing through a predetermined actuation point (AR) in the shift pattern. During a compound up-shift, if the vehicle reaches a speed greater than a predetermined value during a coasting condition and the shift lever is in a low range neutral position, then the range section up-shift is automatically completed without undue wear or damage to the range section synchronized clutch (). It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).
Daniel Monette - Battle Creek MI, US Robert Bailey - Portage MI, US Alan Stine - Kalamazoo MI, US
Assignee:
Eaton Corporation - Cleveland OH
International Classification:
F16D 67/02 F16D 11/06
US Classification:
192015000, 19201800R
Abstract:
A clutch assembly having a clutch, release bearing, and input shaft inertia brake assembly is disclosed. An electric clutch actuator shifts the release bearing axially along an input shaft of a transmission system to either engage the clutch or engage the input shaft inertia brake.
Compound Transmission Having Hybrid Single And Twin Countershafts
A "5. times. 2" compound transmission is disclosed. A main section includes a mainshaft and two countershafts. The mainshaft has a spool gear rotatably mounted thereon and reverse and four forward gears rotationally fixed thereto. A first clutch splined on the first countershaft couples one of two countershaft gears rotatably engaged with a mainshaft gear to the first countershaft. A second clutch splined on the second countershaft couples one of two countershaft gears rotatably engaged with the other mainshaft gears to the second countershaft. An auxiliary section includes an output shaft and third and fourth countershafts. The third and fourth countershafts are concentric with the first and second countershafts, respectively, and are rotatably driven by the spool gear. The third and fourth countershafts have gears rotatably engaged with the fourth forward mainshaft gear and an output shaft splitter gear. A third clutch splined on the output shaft couples either a rearwardmost mainshaft gear or the splitter gear to the output shaft.
Mechanical Transmission With Reduced Ratio Steps In Upper Transmission Ratios
Alan C. Stine - Kalamazoo MI Timothy J. Morscheck - Kalamazoo MI Douglas A. Hughes - Wixom MI
Assignee:
Eaton Corporation - Cleveland OH
International Classification:
F16H 308
US Classification:
74331
Abstract:
A mechanical transmission (14) having a plurality of ratios (first-twelfth) and an automated system (10) utilizing same, has an upper group of ratios (seventh-twelfth) having a relatively small average ratio step (13%) compared to the average ratio steps (30%-40%) of comparable transmissions. This allows high-speed operation (35-70 mph) at or very nearing desired engine speed (112), emulating the characteristics of a CVT.
Joseph D. Reynolds - Climax MI Alan C. Stine - Kalamazoo MI
Assignee:
Eaton Corporation - Cleveland OH
International Classification:
F16H 308
US Classification:
74332
Abstract:
A gear retainer (200) is provided that features a thrust washer (54) that is secured in a transverse groove (40) in a transmission mainshaft (3) for rotation therewith and extends outwardly therefrom into a groove defined between a radially outwardly extending second surface (50) and a retainer ring (58) disposed in a slot (47) in an axially extending first surface (46) defining a recess (42) in a floating mainshaft gear (20encircling mainshaft (3). Gear retainer (200) is operative to limit axial movement of gear (20) and to transmit axial thrust to mainshaft (3) that may have been imparted thereto by a clutching mechanism (24) during the process of clutching gear (20) to mainshaft (3). In another embodiment a gear retainer (300) is provided that includes a spacer (62) between ring (58) and thrust washer (54) that is secured for rotation with gear (20) and is operative to increase contact surface area between ring (58 ) and thrust washer (54).
Alan C. Stine - Kalamazoo MI Joseph D. Reynolds - Climax MI
Assignee:
Eaton Corporation - Cleveland OH
International Classification:
F16H 6336 F16H 6338 F16H 5908
US Classification:
74477
Abstract:
A compound transmission (10) comprising a main transmission section (12) connected in series with a range type multiple speed auxiliary section (14) having at least two selectable range type ratios, and a shift control unit (56) therefor, is provided. The shift control includes a resilient range interlock structure (178, 190) for inhibiting main section shifts from neutral during a range shift transient.