Exhaust gas cleaning system for engineering vehicle
원문보기
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0663127
(2008-10-22)
|
등록번호 |
US-8161736
(2012-04-24)
|
우선권정보 |
JP-2007-288898 (2007-11-06) |
국제출원번호 |
PCT/JP2008/069147
(2008-10-22)
|
§371/§102 date |
20091204
(20091204)
|
국제공개번호 |
WO2009/060719
(2009-05-14)
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발명자
/ 주소 |
- Tsukada, Hidenobu
- Nakamura, Kazunori
- Kamiya, Shohei
|
출원인 / 주소 |
- Hitachi Construction Machinery Co., Ltd.
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
7 인용 특허 :
6 |
초록
▼
An exhaust gas cleaning system for an engineering vehicle, such as a hydraulic excavator, is capable of performing manual regeneration control of a regeneration fuel injector 40 that is started only under the following conditions: a manual regeneration starting switch 39 is enabled; an engine contro
An exhaust gas cleaning system for an engineering vehicle, such as a hydraulic excavator, is capable of performing manual regeneration control of a regeneration fuel injector 40 that is started only under the following conditions: a manual regeneration starting switch 39 is enabled; an engine control dial 2 commands a low-speed idle revolution speed; and a gate lock lever 22 is switched to a second position B at which generation of control pilot pressures a through f by use of remote control valves 25, 26, and 27 is disabled. Even when the manual regeneration control is being executed, if the gate lock lever 22 is switched to a first position A, the manual regeneration control immediately ends. As a result, the manual regeneration control of a filter for collecting particulate matter included in the exhaust gas and the operation of the work system do not influence each other.
대표청구항
▼
1. An exhaust gas cleaning system for an engineering vehicle, said engineering vehicle including: a diesel engine;driven bodies used for work, the driven bodies being driven by the motive power of the engine;first operation means for instructing the operation of the driven bodies used for work; ands
1. An exhaust gas cleaning system for an engineering vehicle, said engineering vehicle including: a diesel engine;driven bodies used for work, the driven bodies being driven by the motive power of the engine;first operation means for instructing the operation of the driven bodies used for work; andsecond operation means that is selectively operated between a first position (A) at which the instruction by the first operation means is enabled and a second position (B) at which the instruction by the first operation means is disabled,said exhaust gas cleaning system including: a filtering unit disposed in an exhaust system of the engine, the filtering unit including a filter for collecting particulate matter included in an exhaust gas; andregeneration units for increasing the temperature of the exhaust gas to burn off and remove particulate matter deposited in the filter,wherein the exhaust gas cleaning system comprising: third operation means for instructing start of the operation of the regeneration units; anda regeneration control unit for starting the operation of the regeneration units, when the second operation means is switched to the second position (B), and when the third operation means is operated to instruct the start of the operation of the regeneration units. 2. The exhaust gas cleaning system for the engineering vehicle according to claim 1, wherein the regeneration control unit stops the operation of the regeneration units, after the operation of the regeneration units starts, when the second operation means is switched to the first position (A). 3. The exhaust gas cleaning system for the engineering vehicle according to claim 1, wherein the engineering vehicle further includes fourth operation means for instructing the target revolution speed of the engine; andthe regeneration control unit starts the operation of the regeneration units, and controls the revolution speed of the engine to ensure that this revolution speed is kept at the specified revolution speed, when the second operation means is switched to the second position (B), and when the fourth operation means is operated to ensure that the low-speed idle revolution speed is instructed as the target revolution speed, and when the third operation means is operated to instruct the start of the operation of the regeneration units. 4. The exhaust gas cleaning system for the engineering vehicle according to claim 1, wherein the engineering vehicle further includes: fifth operation means for outputting an instruction signal used to control the revolution speed and torque of the engine to ensure that the travelling speed is controlled;travelling systems connected to an output shaft of the engine; andsixth operation means used for parking, the sixth operation means being operated to ensure that the travelling systems are braked when the engineering vehicle is parked; andthe regeneration control unit starts the operation of the regeneration units, when the second operation means is switched to the second position (B), and when the sixth operation means is operated to ensure that the travelling systems are braked, and when the third operation means is operated to instruct the start of the operation of the regeneration units. 5. The exhaust gas cleaning system for the engineering vehicle according to claim 1, wherein the engineering vehicle further includes a hydraulic circuit unit including: a hydraulic pump driven by the engine; and hydraulic actuators which are driven by oil discharged from the hydraulic pump to ensure that the driven bodies used for work are driven;the filtering unit includes an oxidation catalyst that is disposed on the upstream side of the filter;each of the regeneration units includes fuel supply means for injecting regeneration fuel into the exhaust gas, and hydraulic pressure load generation means for placing a hydraulic load on the engine, the hydraulic pressure load generation means being disposed in the hydraulic circuit unit; andthe regeneration control unit operates the fuel supply means and the hydraulic pressure load generation means, and controls the revolution speed of the engine to ensure that this revolution speed is kept at the specified revolution speed, when the second operation means is switched to the second position (B), and when the third operation means is operated to instruct the start of the operation of the regeneration units.
이 특허에 인용된 특허 (6)
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Albanesi, Daniel, Apparatus for heating the dump body of a dump truck having a diesel particulate filter.
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Hoppenstedt Bruce B. (Bloomington MN) Wagner Wayne M. (Apple Valley MN) Fuchs Ervin P. (Farmington MN) Steinbrueck Edward A. (Eden Prairie MN), Diesel engine exhaust regenerable filter system.
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Easley, Jr., William L.; Verkiel, Maarten; Strauser, Aaron D.; Driscoll, James J.; Robel, Wade J., Exhaust treatment system.
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Strauser, Aaron D.; Coleman, Gerald N.; Coldren, Dana R., Parasitic load control system for exhaust temperature control.
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Grichnik, Anthony; Jayachandran, Amit; Kesse, Mary L.; Willden, Wade S.; Seskin, Michael, Prediction based engine control system and method.
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Hecker, Michael; Corbett, Adrian, Vehicle exhaust filtration system and method.
이 특허를 인용한 특허 (7)
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Asakage, Tomohiko; Michida, Takaharu; Yamagata, Katsuki; Onuki, Kenji; Sasai, Shintaro, Construction machine.
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Ezawa, Masanori; Kamiya, Shouhei; Hirose, Takashi; Arai, Yasushi, Construction machine.
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Satou, Hitoshi; Ishikawa, Hiroyuki; Haseyama, Takashi, Diesel particulate filter system.
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Ikeda, Takashi; Murata, Tetsuya; Yaginuma, Kenzou, Exhaust gas purification system.
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Nakamura, Tsuyoshi; Ishikawa, Kouji; Arai, Yasushi; Tsukada, Hidenobu; Kamiya, Shohei, Hydraulic drive device of hydraulic operating machine.
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Tanaka, Shinichiro; Kodera, Hiroyasu; Ito, Makoto, Hydraulic drive system.
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Takahashi, Kiwamu; Tsuruga, Yasutaka; Yoshida, Hajime; Takebayashi, Yoshifumi; Mori, Kazushige, Hydraulic drive system for construction machine having exhaust gas purification device.
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