192 clutches and power-stop control – Transmission control and clutch control – Common control
Patent
1990-02-15
1991-08-13
Lorence, Richard
192 clutches and power-stop control
Transmission control and clutch control
Common control
192 358, 192 362, 192 363, 74335, 74473R, B60K 4122
Patent
active
050389017
DESCRIPTION:
BRIEF SUMMARY
This invention concerns a transmission for a motor vehicle.
The transmission is of the kind comprising a change speed gearbox in which its different gear ratios can be selected and de-selected as desired by the driver manually moving a gear lever, a clutch interposed between the engine of the vehicle and the gearbox, and a control causing automatic disengagement of the clutch when deselection of the currently selected gear ratio is initiated by the driver and automatic re-engagement of the clutch when a said gear ratio is selected. In such a transmission there is no need for the driver to act separately to operate the clutch for gear ratio changes, thus the vehicle does not need a driver operated pedal to work the clutch, but only requires accelerator and brake pedals.
According to the invention there is provided a transmission for a motor vehicle wherein the transmission is intended for transmitting rotary motion between an engine of the vehicle and at least one ground running wheel of said vehicle, said transmission comprising
a change speed gearbox comprising at least first and second rotatable shafts, said second shaft being for transmitting rotary motion between said gearbox and a said ground running wheel, a plurality of rotatable gear ratios each being de-selectable and each being mutually exclusively selectable for transmitting rotary motion between said shafts through each selected one of said gear ratios, and gear ratio selection means including a gear lever which is manually movable to cause de-selection of any previously selected gear ratio and to cause selection of any desired said gear ratio, and
clutch means connected with the first shaft and intended for interposing between said engine and said first shaft, the clutch means being engageable to transmit rotary motion between the said engine and first shaft and dis-engageable to interrupt that transmission,
characterized by clutch control means to automatically engage and disengage said clutch means, said clutch control means comprising first observing means to observe when any said gear ratio is selected, said gear lever having a first part and a second part mounted on the first part and being movable with said first part in response to manual force applied to the second part for transmission to said first part, said gear ratios being divided into at least first and second divisions, the first division comprising at least one but not all of said gear ratios and the second division comprising at least one remaining said gear ratio, limits of movement of the first part of the gear lever in first and second opposite directions comprising first and second gear shift limit positions which are spaced apart and fixed such that the movement of the first part of the gear lever in the first direction is away from the second limit position and towards the first limit position and movement of said first part in the second direction is away from the first limit position and towards the second limit position, and wherein movement of the first part of the gear lever in said first direction into said first limit position causes selection of a said gear ratio in said first division and movement of said first part in said second direction into said second limit position causes selection of a said gear ratio in said second division, the gear lever being arranged such that the second part automatically adopts a pre-determined initial position relative to said first part when no manual force is applied to said second part, said second part being movable to a limited extent relative to the first part in each of two opposite directions from said initial position when a manual force is applied to the second part and wherein one of those two opposite directions is in said first direction and the other of those two opposite directions is in said second direction, second observing means to observe movement of the second part of the gear lever relative to the first part in said first and second directions respectively, said clutch control means being so arranged that w
REFERENCES:
patent: 3631946 (1972-01-01), Grosseau
patent: 4183424 (1980-01-01), Rumyantsev et al.
patent: 4723642 (1988-02-01), Grunberg et al.
Jarvis Roger P.
Parsons David
Windsor Harry M.
Young Alastair J.
Automotive Products plc
Lorence Richard
LandOfFree
Clutch control system in which the clutch actuation is initiated does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Clutch control system in which the clutch actuation is initiated, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Clutch control system in which the clutch actuation is initiated will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1521653