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Title:
【発明の名称】空気燃料噴射式2サイクルエンジンの低速回転制御装置
Document Type and Number:
Japanese Patent JP3031473
Kind Code:
B2
Abstract:
PURPOSE:To stabilize low speed revolutions at an idling time and the like by controlling pressure of compressed air directly injected to a cylinder with fuel lower than the other revolution time when the low speed revolution condition of an engine is detected. CONSTITUTION:In an ECU 63, judgement of an engine operation condition from a throttle opening signal (a) from a throttle opening sensor 13, a revolution signal from an revolution sensor 64 is performed. When an idling condition is judged, an opening signal S.S1 is outputted at an changeover valve 61. A branch passage 56d is opened thereby and air pressure inside a primary side air passage 56a is adjusted lower setting pressure than a normal operation condition by an air regulator 62. Since pressure of compressed air supplied to an air fuel injection device 19 is lowered, injection of air and flow speed is decreased so as to make small projection power of injection. Fuel remains in the vicinity of an injection port without spreading inside a combustion chamber, and layer combustion is surely performed so as to stabilize the idling revolutions.

Inventors:
Masaki Osako
Ryusuke Kato
Yuu Motoyama
Application Number:
JP28674989A
Publication Date:
April 10, 2000
Filing Date:
November 02, 1989
Export Citation:
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Assignee:
YAMAHA HATSUDOKI KABUSHIKI KAISHA
International Classes:
F02D41/02; F02B17/00; F02B23/10; F02D41/08; F02M67/02; F02B75/02; F02B75/12; (IPC1-7): F02B17/00; F02D41/02; F02D41/08; F02M67/02
Domestic Patent References:
JP33935A
Attorney, Agent or Firm:
Tsutomu Shimoichi