Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1979-10-10
1982-02-02
Braun, Leslie
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
74861, 74865, 74867, B60K 4104, B60K 4110
Patent
active
043133533
ABSTRACT:
A control system for an automatic transmission of a motor vehicle having a mechanical planetary gear train with hydraulically actuatable gear shift elements, and a manual control valve for delivering a first pressurized fluid to a selected gear shift element when said lever is in one of said forward drive positions comprises a main control valve, responsive to the position of the accelerator pedal and the speed of said vehicle, for controlling the supply of the first pressurized fluid from the manual control valve to the selected element. The main control valve comprises a piston having a first piston surface, which is displaceable between a first position for connecting the supply of first pressurized fluid and a second position for interrupting the supply of first pressurized fluid thereby to disconnect the clutch. A spring acts on the piston against an accelerator pedal position-dependent second fluid pressure which acts on the first piston surface. The piston also has a second piston surface opposed to the first piston surface, and a vehicle speed-dependent third fluid pressure is provided for acting on the second piston surface in opposition to the accelerator pedal position-dependent pressure only when the piston is in the second position, that is, the disengage position.
REFERENCES:
patent: 2968967 (1961-01-01), Ross, Jr.
patent: 3435712 (1969-04-01), Schaefer
patent: 3595102 (1971-07-01), Ohya et al.
patent: 3650160 (1972-03-01), Higuchi et al.
patent: 3733927 (1973-05-01), Uozumi et al.
patent: 3859873 (1975-01-01), Miyauchi et al.
patent: 3871250 (1975-03-01), Miyauchi et al.
patent: 3952614 (1976-04-01), Iijima
patent: 4006652 (1977-02-01), Murakami
patent: 4020718 (1977-05-01), Miyauchi et al.
patent: 4046032 (1977-09-01), Braun et al.
patent: 4046033 (1977-09-01), Hashimoto et al.
patent: 4082011 (1978-04-01), McQuinn et al.
patent: 4129051 (1978-12-01), Shindo et al.
patent: 4136584 (1979-01-01), Ishikawa
Braun Leslie
Volkswagenwerk Aktiengesellschaft
LandOfFree
Control system for an automatic transmission does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Control system for an automatic transmission, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control system for an automatic transmission will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1817289