Vacuum Actuated Clutch Patents (Class 477/82)
  • Patent number: 10688999
    Abstract: A vehicle control device includes a drive source for generating torque as driving force that causes a vehicle to travel, a drive source control mechanism for controlling the torque generation by the drive source, a driving force transmission mechanism for transmitting the torque to vehicle wheels, an engageable element provided in the transmission mechanism, and a processor configured to execute an engagement state change control in which an engagement state of the engageable element is changed, a vehicle attitude controlling module for controlling attitude of the vehicle by driving the drive source control mechanism to reduce the torque so as to decelerate the vehicle, when a condition is satisfied, the condition being that the vehicle is traveling and a steering angle related value increases, and an engagement state change restricting module for restricting the execution of the engagement state change control while the vehicle attitude control is executed.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: June 23, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Keiichi Hiwatashi, Yasunori Takahara, Daisaku Ogawa, Daisuke Umetsu, Osamu Sunahara, Chikako Ohisa
  • Patent number: 7892142
    Abstract: A hydraulically servocontrolled transmission for a road vehicle provided with an internal combustion engine; the servocontrolled transmission displays: a servocontrolled mechanical gearbox operated by at least one first hydraulic actuator; a servocontrolled clutch operated by at least one second hydraulic actuator; a hydraulic circuit comprising a hydraulic accumulator, which contains pressurised control fluid which is used by the hydraulic actuators, and a pump, which is directly operated by the internal combustion engine to supply pressurised control fluid to the hydraulic accumulator; a park-lock device operatable to block the rotation of the driving wheels; and a control unit, which, when the internal combustion engine is turned off, uses the remaining pressure of the control fluid within the hydraulic accumulator to bring the servocontrolled mechanical gearbox in a neutral position.
    Type: Grant
    Filed: January 11, 2008
    Date of Patent: February 22, 2011
    Assignee: Magneti Marelli Powertrain S.p.A.
    Inventor: Stefano Giorgini