Title:
DEVICE FOR CONTROLLING VARIATION IN PRESSURE UPSTREAM OF COMMON RAIL
Document Type and Number:
WIPO Patent Application WO/2010/084651
Kind Code:
A1
Abstract:
A device for controlling a variation in pressure upstream of a common rail, the device being an extremely simple and small-sized compact device which is used in a pressure accumulating common rail type fuel injection apparatus. The device for controlling a variation in pressure upstream of a common rail can supply high-pressure fuel to the common rail in a stable pressure state by preventing pulsation of a high-pressure pump from occurring in each cylinder of the pump and also preventing generation of a surge pressure caused by opening and closing of a check valve. The device is provided with a sub common rail which is connected to the fuel outlets of check valves each provided to each of the cylinders of the high-pressure pump and which has a volume equal to or less than the volume of the common rail, and the device is also provided with injection pipes which connect between the common rail and the fuel outlets of the sub common rail. The number of the injection pipes is set to be less than the number of the check valves each provided to each of the cylinders of the high-pressure pump.
Inventors:
KATO, Kensho (C/O General Machinery & Special Vehicle Headquarters, MITSUBISHI HEAVY INDUSTRIES LTD., 3000, Tana, Sagamihara-sh, Kanagawa 93, 〒2291193, JP)
加藤憲尚 (〒93 神奈川県相模原市田名３０００番地三菱重工業株式会社汎用機・特車事業本部内 Kanagawa, 〒2291193, JP)
加藤憲尚 (〒93 神奈川県相模原市田名３０００番地三菱重工業株式会社汎用機・特車事業本部内 Kanagawa, 〒2291193, JP)
Application Number:
JP2009/067884
Publication Date:
July 29, 2010
Filing Date:
October 16, 2009
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES, LTD. (16-5, Konan 2-chome Minato-k, Tokyo 15, 〒1088215, JP)
三菱重工業株式会社 (〒15 東京都港区港南二丁目１６番５号 Tokyo, 〒1088215, JP)
KATO, Kensho (C/O General Machinery & Special Vehicle Headquarters, MITSUBISHI HEAVY INDUSTRIES LTD., 3000, Tana, Sagamihara-sh, Kanagawa 93, 〒2291193, JP)
三菱重工業株式会社 (〒15 東京都港区港南二丁目１６番５号 Tokyo, 〒1088215, JP)
KATO, Kensho (C/O General Machinery & Special Vehicle Headquarters, MITSUBISHI HEAVY INDUSTRIES LTD., 3000, Tana, Sagamihara-sh, Kanagawa 93, 〒2291193, JP)
International Classes:
F02M55/02; F02M55/00; F02M59/46
Attorney, Agent or Firm:
TAKAHASHI, MATSUMOTO & PARTNERS INTELLECTUAL PROPERTY CORP. (Room 1003, Ambassador Roppongi Buildings 16-13, Roppongi 3-chome, Minato-k, Tokyo 32, 〒1060032, JP)
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