Sony Corporation

Nissan Motor Company Limited

Ryuji Watanabe

Yoshinori Kobayashi

Manabu Okamura

Kenichi Tsubaki

Masafumi Okishima

Shingo Yamanaka

A control method for an engine includes determining whether a predetermined fuel supply stop condition has been fulfilled, executing stop time vibration suppression control of, after stop of fuel supply in response to fulfillment of the predetermined fuel supply stop condition, temporarily performing fuel supply to the engine to suppress vehicle vibration, and stopping fuel supply to all cylinders after the execution of the stop time vibration suppression control. The stop time vibration suppression control includes determining whether a first predetermined number of cylinders have undergone a combustion stroke after the stop of the fuel supply, the first predetermined number being according to a engine revolution speed or a reduction ratio from the engine to drive wheels, and in a case where the first predetermined number of cylinders have undergone the combustion stroke, performing fuel supply to a second predetermined number of cylinders.

Control method and control device for engine

A capstan motor is controlled by a signal derived from a frequency generator that has been converted to a voltage that reflects the instantaneous change in velocity of the rotating motor. Acceleration of the motor is found by using a mean velocity obtained as a reciprocal of the pulsed signal from the frequency generator and then estimating the instantaneous velocity based on the derived acceleration. The estimated instantaneous velocity is converted to a drive voltage for the capstan motor so that the motor can be started and stopped with a respective constant acceleration and deceleration.

Capstan motor drive control device

Growing community of inventors

Kanagawa, Japan

Ryuji Watanabe