Fuel injection control apparatus for internal combustion engine
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02D-041/06
F02D-041/14
출원번호
US-0592382
(2006-03-20)
등록번호
US-7395146
(2008-07-01)
우선권정보
JP-2005-098799(2005-03-30)
국제출원번호
PCT/JP06/306053
(2006-03-20)
§371/§102 date
20060912
(20060912)
국제공개번호
WO06/109542
(2006-10-19)
발명자
/ 주소
Ueda,Koichi
Sata,Kota
출원인 / 주소
Toyota Jidosha Kabushiki Kaisha
대리인 / 주소
Oliff & Berridge, PLC
인용정보
피인용 횟수 :
16인용 특허 :
5
초록▼
An operating condition value is acquired at the time of internal combustion engine startup. If the acquired condition value is one of a plurality of reference condition values for which optimum values are defined, the optimum value for the reference condition value is set as a fuel injection amount.
An operating condition value is acquired at the time of internal combustion engine startup. If the acquired condition value is one of a plurality of reference condition values for which optimum values are defined, the optimum value for the reference condition value is set as a fuel injection amount. If, on the other hand, the acquired condition value is other than the reference condition values, an interpolated value, which is interpolation-calculated by using the relationship between the reference condition values and optimum values, is set as a fuel injection amount. The angular acceleration for fuel injection according to the interpolated value, which is a physical quantity related to the operating performance of an internal combustion engine, is then determined to correct the interpolated value in accordance with the difference between the actual angular acceleration and target angular acceleration.
대표청구항▼
The invention claimed is: 1. A fuel injection control apparatus for an internal combustion engine, which determines a fuel injection amount for startup in accordance with predefined operating conditions, the apparatus comprising: storage means for storing the relationship between a condition value
The invention claimed is: 1. A fuel injection control apparatus for an internal combustion engine, which determines a fuel injection amount for startup in accordance with predefined operating conditions, the apparatus comprising: storage means for storing the relationship between a condition value for the operating conditions and an optimum fuel injection amount that is determined by using as an index a predefined physical quantity related to the operating performance of the internal combustion engine; condition value acquisition means for acquiring the condition value for the operating conditions when the internal combustion engine starts up; fuel injection amount setup means, which, when the acquired condition value is one of a plurality of reference condition values for which optimum values are predetermined, sets an optimum value predetermined for the reference condition value as a fuel injection amount, and when the acquired condition value is other than the reference condition values, sets as a fuel injection amount an interpolated value that is interpolation-calculated by using the relationship between the reference condition values and the optimum values; and interpolated value correction means, which, when the acquired condition value is other than the reference condition values so that the interpolated value is used as the fuel injection amount, determines the value of the predefined physical quantity prevailing when fuel is injected in accordance with the interpolated value, and corrects the interpolated value in accordance with a difference between a target value of the predefined physical quantity and an actual value of the predefined physical quantity. 2. The fuel injection control apparatus according to claim 1, further comprising: variation correction means, which determines the value of the predefined physical quantity of each cylinder when fuel is injected in accordance with a fuel injection amount that is set by the fuel injection amount setup means, and when the actual value of the predefined physical quantity differs from the target value in any of a plurality of cylinders, corrects a control parameter for the affected cylinder so that the actual value approximates to the target value. 3. The fuel injection control apparatus according to claim 2, wherein the control parameter is the fuel injection amount for the affected cylinder. 4. The fuel injection control apparatus according to claim 2, wherein the control parameter is the ignition timing for the affected cylinder. 5. The fuel injection control apparatus according to claim 1, wherein the predefined physical quantity is an angular acceleration of the internal combustion engine. 6. A fuel injection control apparatus for an internal combustion engine, which determines a fuel injection amount for startup in accordance with predefined operating conditions, the apparatus comprising: a storage unit for storing the relationship between a condition value for the operating conditions and an optimum fuel injection amount that is determined by using as an index a predefined physical quantity related to the operating performance of the internal combustion engine; a condition value acquisition unit for acquiring the condition value for the operating conditions when the internal combustion engine starts up; a fuel injection amount setup unit, which, when the acquired condition value is one of a plurality of reference condition values for which optimum values are predetermined, sets an optimum value predetermined for the reference condition value as a fuel injection amount, and when the acquired condition value is other than the reference condition values, sets as a fuel injection amount an interpolated value that is interpolation-calculated by using the relationship between the reference condition values and the optimum values; and an interpolated value correction unit, which, when the acquired condition value is other than the reference condition values so that the interpolated value is used as the fuel injection amount, determines the value of the predefined physical quantity prevailing when fuel is injected in accordance with the interpolated value, and corrects the interpolated value in accordance with a difference between a target value of the predefined physical quantity and an actual value of the predefined physical quantity. 7. The fuel injection control apparatus according to claim 6, further comprising: a variation correction unit, which determines the value of the predefined physical quantity of each cylinder when fuel is injected in accordance with a fuel injection amount that is set by the fuel injection amount setup unit, and when the actual value of the predefined physical quantity differs from the target value in any of a plurality of cylinders, corrects a control parameter for the affected cylinder so that the actual value approximates to the target value.
McAlister, Roy Edward; Hoekstra, Kraig; Kemmet, Ryan; Grottenthaler, David; Wright, Dustin, High pressure direct injected gaseous fuel system and retrofit kit incorporating the same.
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