Control apparatus and method for an internal combustion engine
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02M-025/00
F02D-041/40
F02D-041/00
F02D-019/06
F02D-019/10
F02D-035/02
F02M-021/02
출원번호
US-0115964
(2011-05-13)
등록번호
US-9422893
(2016-08-23)
국제출원번호
PCT/JP2011/061034
(2011-05-13)
§371/§102 date
20131106
(20131106)
국제공개번호
WO2012/157041
(2012-11-22)
발명자
/ 주소
Suzuki, Naoki
Goto, Isamu
Masubuchi, Masahiko
출원인 / 주소
TOYOTA JIDOSHA KABUSHIKI KAISHA
대리인 / 주소
Sughrue Mion, PLLC
인용정보
피인용 횟수 :
0인용 특허 :
14
초록▼
The present invention resides in a control apparatus for an internal combustion engine in which selective use is made of a case where a first fuel, being easy to be ignited, is caused to combust by itself, and a case where a second fuel, being hard to be ignited, is also caused to combust by ignitin
The present invention resides in a control apparatus for an internal combustion engine in which selective use is made of a case where a first fuel, being easy to be ignited, is caused to combust by itself, and a case where a second fuel, being hard to be ignited, is also caused to combust by igniting the first fuel, and which is provided with an acquisition unit configured to acquire a combustion state of the second fuel in the case where the second fuel is also caused to combust by igniting the first fuel, and a decision unit configured to decide amounts of supply of the first fuel and the second fuel to be supplied to the internal combustion engine on and after next time, based on the combustion state of the second fuel determined by the acquisition unit.
대표청구항▼
1. A control method for an internal combustion engine in which selective use is made of a case where a first fuel, being easy to be ignited, is singly caused to combust, and a case where a second fuel, being hard to be ignited, is also caused to combust by igniting said first fuel, wherein the first
1. A control method for an internal combustion engine in which selective use is made of a case where a first fuel, being easy to be ignited, is singly caused to combust, and a case where a second fuel, being hard to be ignited, is also caused to combust by igniting said first fuel, wherein the first fuel is injected in a cylinder in two steps of a pilot injection and a main injection which is carried out after the pilot injection, and the second fuel is mixed with intake air before the pilot injection of said first fuel, said method comprising: a step of acquiring a combustion state of said second fuel in the case where said second fuel is also caused to combust by igniting said first fuel, from an amount of heat generated during a time period from the pilot injection of said first fuel until the main injection of said first fuel; anda step of deciding that the combustion state of said second fuel is good, and decreasing the amount of supply of the main injection of said first fuel and at the same time increasing the amount of supply of said second fuel, in cases where the amount of generated heat during a time period from said pilot injection until said main injection acquired in the step of acquiring is equal to or more than a reference amount of generated heat, and further deciding that the combustion state of said second fuel is not good, and increasing the amount of supply of said first fuel and at the same time decreasing the amount of supply of the main injection of said second fuel, in cases where the amount of generated heat during a time period from said pilot injection until said main injection acquired in the step of acquiring is less than the reference amount of generated heat. 2. A control apparatus for an internal combustion engine in which selective use is made of a case where a first fuel, being easy to be ignited, is singly caused to combust, and a case where a second fuel, being hard to be ignited, is also caused to combust by igniting said first fuel, wherein the first fuel is injected in a cylinder in two steps of a pilot injection and a main injection which is carried out after the pilot injection, and the second fuel is mixed with intake air before the pilot injection of said first fuel, said apparatus comprising one or more processors that operate as: an acquisition unit configured to acquire a combustion state of said second fuel in the case where said second fuel is also caused to combust by igniting said first fuel, from an amount of heat generated during a time period from the pilot injection of said first fuel until the main injection of said first fuel; anda decision unit configured to decide that the combustion state of said second fuel is good, and to decrease the amount of supply of the main injection of said first fuel and at the same time to increase the amount of supply of said second fuel, in cases where the amount of generated heat during a time period from said pilot injection until said main injection acquired by said acquisition unit is equal to or more than a reference amount of generated heat, and further configured to decide that the combustion state of said second fuel is not good, and to increase the amount of supply of the main injection of said first fuel and at the same time to decrease the amount of supply of said second fuel, in cases where the amount of generated heat during a time period from said pilot injection until said main injection acquired by said acquisition unit is less than the reference amount of generated heat. 3. The control apparatus for an internal combustion engine as set forth in claim 2, wherein in cases where the combustion state of said second fuel is good, said decision unit decreases the amount of supply of said first fuel for said main injection, and at the same time increases the amount of supply of said second fuel so that an amount of heat which can be generated by the decrease in the first fuel is equal to an amount of heat generated which can be generated by the increase in the second fuel. 4. The control apparatus for an internal combustion engine as set forth in claim 2, wherein processing of said acquisition unit and said decision unit is carried out at a stage at which the combustion of said internal combustion engine shifts from a case where said first fuel is singly caused to combust into a case where said second fuel is also caused to combust by the ignition of said first fuel. 5. The control apparatus for an internal combustion engine as set forth in claim 3, wherein processing of said acquisition unit and said decision unit is carried out at a stage at which the combustion of said internal combustion engine shifts from a case where said first fuel is singly caused to combust into a case where said second fuel is also caused to combust by the ignition of said first fuel.
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이 특허에 인용된 특허 (14)
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zur Loye, Axel O; Brackney, Larry J; Chenanda, Cariappa M; Hurst, Robert M; Peters, Lester L; Pierz, Patrick M; Wright, John F, Multiple operating mode engine and method of operation.
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Flynn Patrick F. ; Hunter Gary L. ; zur Loye Axel O. ; Akinyemi Omowoleola C. ; Durrett Russ P. ; Moore Greg A. ; Muntean George G. ; Peters Lester L. ; Pierz Patrick M. ; Wagner Julie A. ; Wright Jo, Premixed charge compression ignition engine with optimal combustion control.
zur Loye Axel O. ; Akinyemi Omowoleola C. ; Durrett Russ P. ; Flynn Patrick F. ; Hunter Gary L. ; Moore Greg A. ; Mudd Jackie M. ; Muntean George G. ; Wagner Julie A. ; Wright John F., Premixed charge compression ignition engine with optimal combustion control.
Yamaguchi, Koichi; Urushihara, Tomonori; Yoshizawa, Koudai; Taniyama, Tsuyoshi, System and method for enhanced combustion control in an internal combustion engine.
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