Title:
内燃機関の混合気温度推定装置
Document Type and Number:
Japanese Patent JP3982508
Kind Code:
B2
Abstract:
A gas mixture temperature estimation apparatus for an internal combustion engine assumes that a pilot gas mixture (after combustion) produced by pilot injection is stagnating in an annular configuration in the vicinity of the side wall of a combustion chamber (a side surface of a cavity) when fuel injected by means of main injection (i.e., main gas mixture) travels within the combustion chamber. During a period during which a forefront portion of the main gas mixture has not yet reached the stagnating pilot gas mixture, the temperature of the main gas mixture is estimated by making use of the temperature and specific heat of the cylinder interior gas which serves as a peripheral gas. After the main gas mixture forefront portion has reached the stagnating pilot gas mixture, the temperature of the main gas mixture is estimated by making use of the temperature and specific heat of the stagnating pilot gas mixture which serves as the peripheral gas.
Inventors:
Taku Ibuki
Shigeki Nakayama
Shigeki Nakayama
Application Number:
JP2004050301A
Publication Date:
September 26, 2007
Filing Date:
February 25, 2004
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
F02B31/00; F02D45/00; F02D41/38; F02D41/40; F02M45/04
Domestic Patent References:
| JP10110647A |
Attorney, Agent or Firm:
Patent business corporation Prospec patent office