{
  "$type": "site.standard.document",
  "description": "A control device and a control method for a belt type-continuously variable transmission capable of preventing a belt slip from occurring by restricting that an input torque to the belt type-continuously variable transmission is excessive relative to a belt clamp force when returning from a belt…",
  "path": "/patents/1004715",
  "publishedAt": "2012-03-07T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60W10/06",
    "NISSAN MOTOR [JP]"
  ],
  "textContent": "A control device and a control method for a belt type-continuously variable transmission capable of preventing a belt slip from occurring by restricting that an input torque to the belt type-continuously variable transmission is excessive relative to a belt clamp force when returning from a belt slip control to a normal control are provided are provided. The control device includes a primary pulley (42), a secondary pulley (43), and a belt (44) and is configured to control a variable speed ratio determined by a running radius ratio of the belt (44) on the pulleys by controlling a primary hydraulic pressure and a secondary hydraulic pressure. In the belt type-continuously variable transmission (4), there are provided a normal control means (stepS1) to perform a normal control obtaining an actual secondary hydraulic pressure to secure a belt clamp force based on an operating condition, a belt slip control means (stepS3) to perform a belt slip control reducing the actual secondary hydraulic pressure to be lower than that in the time of the normal control, and a normal control-return control means (stepS5) to perform a limitation to an input torque-change rate in which an input torque to the belt type-continuously variable transmission (4) changes in the increasing direction when returning from the belt slip control to the normal control, for a predetermined period from an initiation of the return.",
  "title": "BELT BASED, CONTINUOUSLY-VARIABLE TRANSMISSION CONTROL DEVICE AND CONTROL METHOD"
}