{
  "$type": "site.standard.document",
  "description": "A direct injection engine (10) is coupled to a vacuum brake booster (130) wherein vacuum created from engine pumping is used to supplement driver braking force. The brake booster (130) is coupled through a check valve (134) to the engine intake manifold (44). A method is disclosed for estimating…",
  "path": "/patents/1111682",
  "publishedAt": "2001-07-11T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60T13/52",
    "FORD GLOBAL TECH INC [US]"
  ],
  "textContent": "A direct injection engine (10) is coupled to a vacuum brake booster (130) wherein vacuum created from engine pumping is used to supplement driver braking force. The brake booster (130) is coupled through a check valve (134) to the engine intake manifold (44). A method is disclosed for estimating pressure in the brake booster based on operating conditions. A method is also disclosed for estimating operating parameters based on measured brake booster pressure. Further, a method is disclosed for diagnosing degradation, or monitoring, a brake booster pressure sensor (142) based on operating conditions. In addition, a method is disclosed for diagnosing degradation in other vehicle and engine sensors based on measured brake booster pressure.",
  "title": "Determination method for the operability of a vacuum brake booster sensor"
}