Patents Examined by Sueh Varma
  • Fuel combustion control system for engine
    Patent number: 6212879
    Abstract: A fuel combustion control system for an internal combustion engine having an exhaust gas purifying catalyst installed in an exhaust line therein advances an ignition timing to try to stabilize combustion when a fluctuation of engine speed is larger than a limit speed on stable combustion and further retards an ignition timing to accelerate a rise in catalyst temperature together with securing combustion stability while the engine is still cold or when a fluctuation of engine speed is smaller than the limit speed on stable combustion.
    Type: Grant
    Filed: August 4, 1998
    Date of Patent: April 10, 2001
    Assignee: Mazda Motor Corporation
    Inventors: Hirofumi Nishimura, Junichi Taga, Takahisa Ishihara, Eiji Nishimura