IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0448461
(1999-11-24)
|
우선권정보 |
IT-B098A 000661 (1998-11-26) |
발명자
/ 주소 |
- Poggio, Luca
- Secco, Marco
- Gelmetti, Andrea
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
9 |
초록
▼
Method for controlling the injection and ignition in a direct-injection endothermic engine, in order to accelerate heating of a catalytic converter , which is disposed along the exhaust pipe of the engine, The method comprising the steps of executing, during a single cycle of the engine, and for eac
Method for controlling the injection and ignition in a direct-injection endothermic engine, in order to accelerate heating of a catalytic converter , which is disposed along the exhaust pipe of the engine, The method comprising the steps of executing, during a single cycle of the engine, and for each cylinder of the engine itself, at least a first injection of fuel, during suction stroke and/or compression stroke of the cylinder itself, in order to supply a weak mixture; priming combustion in each cylinder, at a priming moment which is pre-determined such that the combustion in each cylinder generates the same torque; and executing, in at least one cylinder of the engine, a second injection of fuel, during the exhaust stroke of the cylinder itself, such that the ratio of air/fuel of the mixture as a whole, which is supplied to the cylinder during suction stroke, compression stroke, expansion stroke and exhaust stroke, is close to the stoichiometric value; the fuel which is injected in the said second injection giving rise to residual combustion in the presence of the oxygen-rich exhaust gases, which are derived from the combustion of the weak mixture; the residual combustion not affecting the torque generated, and producing heat in order to speed up heating of the catalytic converter.
대표청구항
▼
Method for controlling the injection and ignition in a direct-injection endothermic engine, in order to accelerate heating of a catalytic converter , which is disposed along the exhaust pipe of the engine, The method comprising the steps of executing, during a single cycle of the engine, and for eac
Method for controlling the injection and ignition in a direct-injection endothermic engine, in order to accelerate heating of a catalytic converter , which is disposed along the exhaust pipe of the engine, The method comprising the steps of executing, during a single cycle of the engine, and for each cylinder of the engine itself, at least a first injection of fuel, during suction stroke and/or compression stroke of the cylinder itself, in order to supply a weak mixture; priming combustion in each cylinder, at a priming moment which is pre-determined such that the combustion in each cylinder generates the same torque; and executing, in at least one cylinder of the engine, a second injection of fuel, during the exhaust stroke of the cylinder itself, such that the ratio of air/fuel of the mixture as a whole, which is supplied to the cylinder during suction stroke, compression stroke, expansion stroke and exhaust stroke, is close to the stoichiometric value; the fuel which is injected in the said second injection giving rise to residual combustion in the presence of the oxygen-rich exhaust gases, which are derived from the combustion of the weak mixture; the residual combustion not affecting the torque generated, and producing heat in order to speed up heating of the catalytic converter. er when discrete P-waves and R-waves may not be detectable.
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