Control apparatus of internal combustion engine
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F01N-003/00
F02D-013/02
F01N-003/20
F01N-003/36
F02D-041/02
F02D-041/30
F02D-041/00
F01N-003/10
F02B-033/34
F02D-041/04
출원번호
US-0782828
(2013-04-09)
등록번호
US-9599037
(2017-03-21)
국제출원번호
PCT/JP2013/060724
(2013-04-09)
국제공개번호
WO2014/167649
(2014-10-16)
발명자
/ 주소
Hokuto, Hiroyuki
출원인 / 주소
TOYOTA JIDOSHA KABUSHIKI KAISHA
대리인 / 주소
Andrews Kurth Kenyon LLP
인용정보
피인용 횟수 :
0인용 특허 :
6
초록▼
A control apparatus of an internal combustion engine which is capable of a lean burn operation and which includes a catalyst which is provided in an exhaust passage of the internal combustion engine and which has an oxidizing ability, a supercharger; an in-passage injection valve which injects fuel
A control apparatus of an internal combustion engine which is capable of a lean burn operation and which includes a catalyst which is provided in an exhaust passage of the internal combustion engine and which has an oxidizing ability, a supercharger; an in-passage injection valve which injects fuel into an intake passage; an in-cylinder injection valve which injects fuel into a cylinder, and a variable valve apparatus which changes at least one of an opening timing of an intake valve and a closing timing of an exhaust valve. The control apparatus performs creating a valve overlap that is a state where the intake valve and the exhaust valve of the internal combustion engine are opened, completing an injection of fuel from the in-passage injection valve during a period in which the intake valve is closed, and completing an injection of fuel from the in-cylinder injection valve during an intake stroke when intake air pressure of the internal combustion engine is higher than atmospheric pressure.
대표청구항▼
1. A control apparatus of an internal combustion engine which is capable of a lean burn operation and which comprises: a catalyst which is provided in an exhaust passage of the internal combustion engine and which has an oxidizing ability;a supercharger;an in-passage injection valve which injects fu
1. A control apparatus of an internal combustion engine which is capable of a lean burn operation and which comprises: a catalyst which is provided in an exhaust passage of the internal combustion engine and which has an oxidizing ability;a supercharger;an in-passage injection valve which injects fuel into an intake passage of the internal combustion engine;an in-cylinder injection valve which injects fuel into a cylinder of the internal combustion engine; anda variable valve apparatus which changes at least one of an opening timing of an intake valve and a closing timing of an exhaust valve of the internal combustion engine, whereinthe control apparatus performs creating a valve overlap that is a state where the intake valve and the exhaust valve of the internal combustion engine are opened, completing an injection of fuel from the in-passage injection valve during a period in which the intake valve is closed, and completing an injection of fuel from the in-cylinder injection valve during an intake stroke when intake air pressure of the internal combustion engine is higher than atmospheric pressure. 2. The control apparatus of an internal combustion engine according to claim 1, wherein the control apparatus equalizes air-fuel ratios during combustion inside the cylinder of the internal combustion engine between a case where all of the following is performed when intake air pressure of the internal combustion engine is higher than atmospheric pressure and a case where any one or more of the following is not performed: creating a valve overlap that is a state where the intake valve and the exhaust valve of the internal combustion engine are opened; completing the injection of fuel from the in-passage injection valve during a period in which the intake valve is closed; and completing the injection of fuel from the in-cylinder injection valve during an intake stroke. 3. The control apparatus of an internal combustion engine according to claim 1, wherein the control apparatus adjusts fuel injection amounts from the in-passage injection valve and the in-cylinder injection valve so that an overall air-fuel ratio that is a value obtained by dividing an intake air amount of the internal combustion engine by a combined fuel injection amount of the fuel injection amount of the in-passage injection valve and the fuel injection amount of the in-cylinder injection valve is a leaner air-fuel ratio than a stoichiometric air-fuel ratio. 4. The control apparatus of an internal combustion engine according to claim 1, wherein the control apparatus performs creating a valve overlap that is a state where the intake valve and the exhaust valve of the internal combustion engine are opened, completing the injection of fuel from the in-passage injection valve during a period in which the intake valve is closed, and completing the injection of fuel from the in-cylinder injection valve during an intake stroke when intake air pressure of the internal combustion engine is higher than atmospheric pressure and in a case where a temperature of the catalyst having oxidizing ability is equal to or higher than a prescribed temperature at which fuel reacts. 5. The control apparatus of an internal combustion engine according to claim 1, wherein the control apparatus performs creating a valve overlap that is a state where the intake valve and the exhaust valve of the internal combustion engine are opened, completing the injection of fuel from the in-passage injection valve during a period in which the intake valve is closed, and completing the injection of fuel from the in-cylinder injection valve during an intake stroke when intake air pressure of the internal combustion engine is higher than atmospheric pressure and in a case where a temperature of the catalyst having oxidizing ability is equal to or lower than a threshold. 6. The control apparatus of an internal combustion engine according to claim 1, wherein at least one of an occlusion reduction-type NOx catalyst, a selective reduction-type NOx catalyst, and a filter is provided in the exhaust passage on a downstream side of the catalyst having oxidizing ability, andthe control apparatus, in a case where a temperature of at least one of the occlusion reduction-type NOx catalyst, the selective reduction-type NOx catalyst, and the filter is lower than a threshold, does not perform at least one of creating a valve overlap that is a state where the intake valve and the exhaust valve of the internal combustion engine are opened, completing the injection of fuel from the in-passage injection valve during a period in which the intake valve is closed, and completing the injection of fuel from the in-cylinder injection valve during an intake stroke when intake air pressure of the internal combustion engine is higher than atmospheric pressure. 7. The control apparatus of an internal combustion engine according to claim 1, wherein at least one of an occlusion reduction-type NOx catalyst, a selective reduction-type NOx catalyst, and a filter is provided in the exhaust passage on a downstream side of the catalyst having oxidizing ability, andthe control apparatus, in a case where at least one of the following is not performed when a temperature of at least one of the occlusion reduction-type NOx catalyst, the selective reduction-type NOx catalyst, and the filter is equal to or higher than a target temperature, does not perform one of creating a valve overlap that is a state where the intake valve and the exhaust valve of the internal combustion engine are opened, completing the injection of fuel from the in-passage injection valve during a period in which the intake valve is closed, and completing the injection of fuel from the in-cylinder injection valve during an intake stroke when intake air pressure of the internal combustion engine is higher than atmospheric pressure. 8. The control apparatus of an internal combustion engine according to claim 1, wherein the control apparatus determines an amount of fuel injected from the in-passage injection valve based on a temperature of the catalyst having oxidizing ability and a low calorific value of the fuel. 9. The control apparatus of an internal combustion engine according to claim 1, wherein the control apparatus increases a valve overlap amount in a case where all of the following is performed when intake air pressure of the internal combustion engine is higher than atmospheric pressure as compared to a case where any one or more of the following is not performed: creating a valve overlap that is a state where the intake valve and the exhaust valve of the internal combustion engine are opened; completing the injection of fuel from the in-passage injection valve during a period in which the intake valve is closed; and completing the injection of fuel from the in-cylinder injection valve during an intake stroke. 10. The control apparatus of an internal combustion engine according to claim 1, wherein in the internal combustion engine, the exhaust valve opens after the intake valve closes, the intake valve opens after the exhaust valve opens, the exhaust valve closes after the intake valve opens, the intake valve closes after the exhaust valve closes, and the control apparatus:starts fuel injection from the in-passage injection valve after the intake valve closes and after the exhaust valve opens, or starts fuel injection from the in-passage injection valve after the intake valve closes and before the exhaust valve opens;completes fuel injection from the in-passage injection valve after fuel injection from the in-passage injection valve is started and before the intake valve opens;starts fuel injection from the in-cylinder injection valve after the intake valve opens and before the exhaust valve closes, or starts fuel injection from the in-cylinder injection valve after the intake valve opens and after the exhaust valve closes; andcompletes fuel injection from the in-cylinder injection valve after fuel injection from the in-cylinder injection valve is started and before the intake valve closes.
Gibson, Alex O'Connor; Pursifull, Ross Dykstra; Russell, John D.; Ulrey, Joseph Norman; Surnilla, Gopichandra; Lewis, Donald J., Methods and systems for engine starting.
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.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.