Ignition timing control device for number of cylinders control engine

Abstract

Abstract PURPOSE:To enable rapid working of a rest cylinder and to prevent slow shifting of an engine from reduced number of cylinders operation to total cylinder operation, by a method wherein, during shifting of an engine from reduced number of cylinders operation to total cylinder operation, control is effected so that the ignition timing of a rest cylinder is delayed given time than that of a working cylinder. CONSTITUTION:A number of cylinder control engine has a number of cylinders reducing means 102 inputting an output signal from a running state detecting means 101 detecting the running state of an engine, and when low load running of the engine is detected by the number of cylinders reducing means 102, operation of a part of cylinders is stopped. In this case, an ignition timing correcting means 103 is provided for inputting an output signal from the number of cylinders reducing means 102 and delaying the ignition timing of a rest cylinder a given time than that of a working cylinder during shifting of the engine from reduced number of cylinders running to total cylinder running. An ignition means 105 is controlled according to an ignition timing corrected by an ignition timing setting means 104. This constitution enables rapid shifting of a rest cylinder during shifting of the engine from reduced number of cylinders running to total cylinder running, and prevents the occurrence of slow shifting during shifting.

Inventors

• 👤 Seiji Makimoto
• 👤 牧本　成治
• 👤 Takeshi Yoshimura
• 👤 武 吉村
• 👤 Seigo Sakai
• 👤 酒井　聖悟

Bibliographic Details