| US 7,588,015 B2 | ||
| Device and method for controlling ignition timing of internal combustion engine | ||
| Rihito Kaneko, Nishikamo-gun (Japan); Kenji Kasashima, Nishikamo-gun (Japan); Masatomo Yoshihara, Toyota (Japan); Koji Aso, Susono (Japan); Kenji Senda, Okazaki (Japan); Yuichi Takemura, Anjo (Japan); Shuhei Oe, Kariya (Japan); and Kiyoshi Iwade, Okazaki (Japan) | ||
| Assigned to Toyota Jidosha Kabushiki Kaisha, Toyota-shi (Japan); Denso Corporation, Kariya-shi (Japan); and Nippon Soken, Inc, Nishio-shi (Japan) | ||
| Filed on Jan. 25, 2007, as Appl. No. 11/627,133. | ||
| Claims priority of application No. 2006-019631 (JP), filed on Jan. 27, 2006. | ||
| Prior Publication US 2007/0175444 A1, Aug. 02, 2007 | ||
| Int. Cl. F02P 5/14 (2006.01); F02P 5/00 (2006.01) | ||
| U.S. Cl. 123—406.21 [123/406.29] | 18 Claims |
| 1. A device for controlling ignition timing of an internal combustion engine, comprising:
a knock sensor that detects magnitude of vibration occurring in said internal combustion engine; and
an operation unit connected to said knock sensor;
wherein:
said operation unit calculates knock magnitude related to magnitude of vibration due to knocking, based on the magnitude of
vibration occurring in said internal combustion engine;
said operation unit controls ignition timing of said internal combustion engine, based on a result of comparison between said
knock magnitude and a predetermined determination value;
said operation unit corrects said determination value, based on an occurrence frequency of knocking; and
said operation unit sets said determination value, when a difference between the magnitude of vibration occurring in said
internal combustion engine and said determination value is greater than a predetermined value, to a value determined in accordance
with the magnitude of vibration occurring in said internal combustion engine.
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