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Automatic stop/ start-up controlling device of an engine

  • US 6,763,903 B2
  • Filed: 12/06/2001
  • Issued: 07/20/2004
  • Est. Priority Date: 12/18/2000
  • Status: Active Grant
First Claim
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1. An automatic stop/start-up controlling device for an engine, having a transmission arranged with an engine mounted on a vehicle through a clutch, said controlling device 1) controlling to automatically stop the engine when an automatic stop condition is satisfied while the engine is driven, 2) controlling to perform a fuel cut when a deceleration condition is satisfied, and 3) controlling to automatically start up the engine when an automatic start-up condition is satisfied while the engine is automatically stopped, comprising a controller;

  • wherein the automatic stop condition is satisfied when an idle switch is on, a gear position of said transmission is in neutral, and the vehicle velocity is less than a predetermined velocity;

    wherein the deceleration condition is satisfied when the idle switch is on, the vehicle speed is less than a set value and the transmission is in a gear position, the set value being different for each of the gear positions; and

    wherein the automatic start-up condition is satisfied when one of the following conditions is satisfied, the conditions being (1) said clutch is changed to a disengaged state from a fully or half engaged state, (2) the gear position of said transmission changes to non-neutral, (3) an idle switch is off, or (4) a condition of booster negative pressure is obtained.

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