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Title:
IN-CYLINDER PRESSURE DETECTING DEVICE OF DIRECT INJECTION TYPE INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2012/115036
Kind Code:
A1
Abstract:
In an in-cylinder pressure detecting device of a fuel direct injection type internal combustion engine, an annular pressure detecting element (34) is installed around a fuel injection hole (33b) at a position close to the tip end of an injector used to inject fuel into a combustion chamber. Since the pressure detecting element (34) is installed on the injector, it is not necessary to change the shape or structure of a cylinder head or the combustion chamber for installing the pressure detecting element (34), and since the pressure detecting element (34) can be cooled by fuel passing through the injector, the pressure detecting precision and durability of the pressure detecting element (34) can be improved. In addition, since the pressure detecting element (34) is disposed around the fuel injection hole (33b), the size of the pressure detecting element (34) can be maximally increased while preventing interference between the pressure detecting element (34) and fuel injected through the fuel injection hole (33b), so as to guarantee pressure detecting precision.

Inventors:
AKAZAKI Shusuke (4-1, Chuo 1-chome, Wako-sh, Saitama 93, 〒3510193, JP)
赤崎 修介 (〒93 埼玉県和光市中央1丁目4番1号 株式会社本田技術研究所内 Saitama, 〒3510193, JP)
YAMAMOTO Yuji (4-1, Chuo 1-chome, Wako-sh, Saitama 93, 〒3510193, JP)
山本 裕司 (〒93 埼玉県和光市中央1丁目4番1号 株式会社本田技術研究所内 Saitama, 〒3510193, JP)
Application Number:
JP2012/053959
Publication Date:
August 30, 2012
Filing Date:
February 20, 2012
Export Citation:
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Assignee:
HONDA MOTOR CO., LTD. (1-1 Minami-Aoyama 2-chome, Minato-ku Tokyo, 56, 〒1078556, JP)
本田技研工業株式会社 (〒56 東京都港区南青山二丁目1番1号 Tokyo, 〒1078556, JP)
KEIHIN CORPORATION (26-2, Nishishinjuku 1-chome Shinjuku-k, Tokyo 39, 〒1630539, JP)
株式会社ケーヒン (〒39 東京都新宿区西新宿一丁目26番2号 Tokyo, 〒1630539, JP)
AKAZAKI Shusuke (4-1, Chuo 1-chome, Wako-sh, Saitama 93, 〒3510193, JP)
赤崎 修介 (〒93 埼玉県和光市中央1丁目4番1号 株式会社本田技術研究所内 Saitama, 〒3510193, JP)
International Classes:
G01L23/10; F02D35/00; F02D45/00; F02M65/00; G01L23/22
Domestic Patent References:
WO2004015385A12004-02-19
Foreign References:
JP2006527321A2006-11-30
JPH0953483A1997-02-25
JP2010265790A2010-11-25
JP2002243571A2002-08-28
JP2000085124A2000-03-28
JP2001527183A2001-12-25
JPH05248977A1993-09-28
JP2000180286A2000-06-30
Other References:
See also references of EP 2679972A4
Attorney, Agent or Firm:
OCHIAI Takeshi et al. (TO Building, 6-3 Taito 2-chome, Taito-k, Tokyo 16, 〒1100016, JP)
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Claims: