Title:
APPARATUS FOR DETERMINING HYDRAULIC PRESSURE IN ENGINE
Document Type and Number:
Japanese Patent JP2012241612
Kind Code:
A
Abstract:
To determine hydraulic pressure state with good accuracy even at low engine revolutions, in an apparatus for determining hydraulic pressure which is configured to determine hydraulic pressure state of oil in an engine based on ON/OFF state of a hydraulic pressure switch.
Temperature information of engine cooling water or oil and engine rpm (speed) information are associated with each other, for determination of hydraulic pressure state, and determination of hydraulic pressure state is performed from lower engine revolutions when the temperature is lower.
Inventors:
OKAZAWA HISASHI
SATO MASAAKI
OMORI YUJI
FUJII NOBUHIRO
WAKITA YUJI
KUSUNOKI TOMOKUNI
SATO MASAAKI
OMORI YUJI
FUJII NOBUHIRO
WAKITA YUJI
KUSUNOKI TOMOKUNI
Application Number:
JP2011112223A
Publication Date:
December 10, 2012
Filing Date:
May 19, 2011
Export Citation:
Assignee:
MAZDA MOTOR
International Classes:
F01M1/20; F01M1/16
Domestic Patent References:
| JP2009222035A | 2009-10-01 | |||
| JP2002295794A | 2002-10-09 | |||
| JP2005188434A | 2005-07-14 | |||
| JPH11270323A | 1999-10-05 |
Attorney, Agent or Firm:
Maeda patent office
Hiroshi Maeda
Hiroshi Takeuchi
Takahisa Shimada
Yuji Takeuchi
Katsumi Imae
Kazunari Ninomiya
Tomoo Harada
Seki Kei
Yasuya Sugiura
Daisuke Kawabe
Masanori Hasegawa
Tsuguya Iwashita
Koji Fukumoto
Ryo Maeda
Mawaki Hachizo
Yukichi Matsunaga
Kenji Kawakita
Shohei Okazawa
Hiroshi Maeda
Hiroshi Takeuchi
Takahisa Shimada
Yuji Takeuchi
Katsumi Imae
Kazunari Ninomiya
Tomoo Harada
Seki Kei
Yasuya Sugiura
Daisuke Kawabe
Masanori Hasegawa
Tsuguya Iwashita
Koji Fukumoto
Ryo Maeda
Mawaki Hachizo
Yukichi Matsunaga
Kenji Kawakita
Shohei Okazawa
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