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US 6,634,332 B2Granted
Engine start-stop control system
AssigneeDenso Corporation
InventorsMikio Saito, Masahiko Osada, Toshihisa Ishihara
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AssigneeDenso Corporation
InventorsMikio Saito, Masahiko Osada, Toshihisa Ishihara
Estimating the term…
An engine start-stop control system for an automotive vehicle includes a first step for supplying current to a solenoid of a magnet switch of a starter at 100% duty ratio until a first predetermined time passes, a second step for supplying current to the solenoid at a duty ratio that is less than 100% after the first predetermined period passes until a second predetermined period passes, and a third step for supplying current to the solenoid at 100% duty ratio after the second predetermined period passes until a third predetermined period passes. Therefore, a pinion of the starter reaches a ring gear of the engine in a short time and engages the ring gear with a moderate impacting shock, thereby preventing the pinion and the ring gear from being damaged.
An engine start-stop control system for an automotive vehicle including a battery, an engine having a ring gear, a starter having a motor, a pinion, and a magnet switch having a plunger and a solenoid for driving said pinion to engage said ring gear, said engine start-stop control system, comprising:
A method of starting and stopping an engine having a ring gear for an automotive vehicle and a battery by a starter having a motor, a pinion, and a magnet switch having a plunger and a solenoid for driving said pinion to engage said ring gear, said method comprising the steps of:
Dependencies are inferred from the claim text.