| US 7,509,940 B2 | ||
| Marine engine | ||
| Masanori Takahashi, Shiznoka-ken (Japan); and Yoshibumi Iwata, Shizuoka-ken (Japan) | ||
| Assigned to Yamaha Hatsudoki Kabushiki Kaisha, Shizuoka-ken (Japan) | ||
| Appl. No. 11/571,423 PCT Filed Sep. 29, 2005, PCT No. PCT/JP2005/018031 § 371(c)(1), (2), (4) Date Nov. 20, 2007, PCT Pub. No. WO2006/035909, PCT Pub. Date Apr. 06, 2006. |
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| Claims priority of application No. 2004-284414 (JP), filed on Sep. 29, 2004. | ||
| Prior Publication US 2008/0065306 A1, Mar. 13, 2008 | ||
| Int. Cl. F02P 5/00 (2006.01); G06F 19/00 (2006.01) | ||
| U.S. Cl. 123—406.28 [701/114] | 15 Claims |
| 1. An engine control system comprising:
an ion current detection component configured to detect an ion current value representing the number of ions produced by a
fuel-air mixture burning in a combustion chamber of the engine; and
a seawater-ingress judgment component configured to compare a predetermined seawater-ingress current value with the ion current
value detected by the ion current detection component to determine whether seawater has infiltrated the combustion chamber.
|