Internal-combustion engines – Engine speed regulator
Reexamination Certificate
2006-12-19
2006-12-19
Kwon, John T. (Department: 3747)
Internal-combustion engines
Engine speed regulator
C123S339100
Reexamination Certificate
active
07150263
ABSTRACT:
An engine speed control apparatus includes a throttle valve for adjusting the amount of an intake air sucked into an engine, a drive unit for driving the throttle valve, and a control unit for generating a PWM signal for driving the drive unit. The control unit includes a real speed detecting unit for detecting a real engine speed, a target speed setting unit for setting a target engine speed, a target speed change amount calculating unit for calculating a target engine speed change amount with the use of the real engine speed and the target engine speed, and a PWM pulse generating unit which calculates, according to the target engine speed change amount, a PWM control parameter for determining a PWM duty, and generates a PWM signal based on the calculated PWM control parameter, so as to supply the generated PWM signal to the drive unit. The PWM control parameter includes at least one of a PWM duty correction value for correcting the duty ratio of a PWM signal, a PWM duty correction value maintaining time during which the PWM duty correction value is continuously applied, and a PWM duty correction frequency at which the PWM duty correction value is applied.
REFERENCES:
patent: 4344398 (1982-08-01), Ikeura
patent: 4345557 (1982-08-01), Ikeura
patent: 4406261 (1983-09-01), Ikeura
patent: 4545348 (1985-10-01), Ikeura
patent: 4633093 (1986-12-01), Otobe et al.
patent: 4649878 (1987-03-01), Otobe et al.
patent: 4803637 (1989-02-01), Tada et al.
patent: 4814991 (1989-03-01), Tada et al.
patent: 5113347 (1992-05-01), Ohuchi et al.
patent: 60-017254 (1985-01-01), None
patent: 05-86937 (1993-04-01), None
patent: 05-263703 (1993-10-01), None
patent: 09-79083 (1997-03-01), None
patent: 10-103121 (1998-04-01), None
patent: 2002-54485 (2002-02-01), None
Kishi Tomoaki
Uchiyama Mikiyasu
Keating & Bennett LLP
Kwon John T.
Yamaha Hatsudoki Kabushiki Kaisha
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