Internal-combustion engines – Two-cycle – Rear compression
Reexamination Certificate
2005-06-14
2005-06-14
Yuen, Henry C. (Department: 3747)
Internal-combustion engines
Two-cycle
Rear compression
Reexamination Certificate
active
06904879
ABSTRACT:
An engine has a lubrication system configured to lubricate at least a portion of the engine with lubricant. The lubrication system has a lubrication pump that periodically pressurizes the lubricant toward the portion of the engine. A first sensor senses an engine speed. A second sensor senses an engine load. A third sensor senses a temperature of the lubricant or the engine. A control device controls the lubrication pump. The control device determines a frequency of periodic pressurization by the lubrication pump based upon outputs from the first and second sensors. The control device determines a pressurization time of the lubrication pump based upon at least one of outputs from the first, second and third sensors.
REFERENCES:
patent: 5597051 (1997-01-01), Moriya et al.
patent: 5921758 (1999-07-01), Anamoto et al.
patent: 5934242 (1999-08-01), Anamoto
patent: 10-37730 (1998-02-01), None
Co-pending U.S. Patent Application “Lubrication System for Two-Cycle Engine” U.S. Appl. No. 10/439,049, filed May 15, 2003, Inventor Masahiko Kato.
Ali Hyder
Knobbe Martens Olson & Bear LLP
Yamaha Marine Kabushiki Kaisha
Yuen Henry C.
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