摘要:
A flow rate controller of an internal combustion engine includes a flow rate change section configured by including an EGR valve, a bypass valve, and a diesel throttle, as the flow rate change section capable of changing at least one of a flow rate of exhaust gas that is recirculated to an intake system from an exhaust system of an internal combustion engine via an EGR passage and a flow rate of fresh air that flows into the internal combustion engine. In addition, an ECU is included to realize: an arrival position determining section for determining an arrival position of condensed water in the EGR passage that is moved by the EGR at least either at the time of acceleration or at the time of deceleration of the internal combustion engine; and a control section for controlling the flow rate change section on the basis of the arrival position determined by the arrival position determining section.
摘要:
A fuel injection valve coupled to a common rail is provided. When fuel injection is carried out, the fuel pressure in the fuel injection valve pulsates. An interval between a pilot injection and a main injection is set so that the main injection is carried out at a zero gradient timing as a timing when the gradient of the fuel pressure in the fuel injection valve after the pilot injection is approximately equal to zero. Owing to a fuel injection control apparatus and a fuel injection control method for an internal combustion engine that perform the above-mentioned control, the fuel injection amount for the subsequent fuel injection following the preceding fuel injection can be reliably held equal to a normal amount.
摘要:
A fuel injection valve coupled to a common rail is provided. When fuel injection is carried out, the fuel pressure in the fuel injection valve pulsates. An interval between a pilot injection and a main injection is set so that the main injection is carried out at a zero gradient timing as a timing when the gradient of the fuel pressure in the fuel injection valve after the pilot injection is approximately equal to zero. Owing to a fuel injection control apparatus and a fuel injection control method for an internal combustion engine that perform the above-mentioned control, the fuel injection amount for the subsequent fuel injection following the preceding fuel injection can be reliably held equal to a normal amount.
摘要:
A variable-nozzle type turbo charger capable of temporarily decreasing the back pressure of the engine at the start of the engine. The turbo charger is equipped with a plurality of nozzle vanes of which the opening degree can be changed and are capable of changing the areas of turbine nozzles at the time when exhaust gases of an engine are guided from said turbine nozzles formed among said nozzle vanes to a turbine rotor, wherein an actuator that adjusts the opening degree of the nozzle vanes is so controlled that the areas of the turbine nozzles are larger than a minimum area for a predetermined period of time from the start of the engine, and, after the passage of said predetermined period of time, said actuator is so controlled that the areas of said turbine nozzles become the minimum area to promote the warming-up of the engine when the water temperature of the engine or the engine load is smaller than a predetermined value.
摘要:
A flow rate controller of an internal combustion engine includes a flow rate change section configured by including an EGR valve, a bypass valve, and a diesel throttle, as the flow rate change section capable of changing at least one of a flow rate of exhaust gas that is recirculated to an intake system from an exhaust system of an internal combustion engine via an EGR passage and a flow rate of fresh air that flows into the internal combustion engine. In addition, an ECU is included to realize: an arrival position determining section for determining an arrival position of condensed water in the EGR passage that is moved by the EGR at least either at the time of acceleration or at the time of deceleration of the internal combustion engine; and a control section for controlling the flow rate change section on the basis of the arrival position determined by the arrival position determining section.
摘要:
According to an internal combustion engine fuel injection control apparatus and control method, when an operating region of the engine shifts from a fuel cut region in which no fuel is injected to a low load region in which a small amount of fuel is injected, or visa versa, at least one pilot injection is executed ahead of a main injection in the low load region, and the number of pilot injections is determined according to the engine coolant temperature. This injection control makes it possible to ensure drivability while suppressing the amount of HC produced.
摘要:
A multi-cylinder internal combustion engine having a plurality of cylinders, each comprising a combustion chamber and an accumulation chamber which are interconnected to each other via an accumulation valve. The accumulation chambers are interconnected to each other via a common connecting passage. The opening operation of the accumulation valve is controlled so that the accumulation valve remains opened during the compression stroke. In the first half of the compression stroke, a jet of the combustible mixture is spouted out into the combustion chamber from the accumulation chamber to create a strong swirl motion in the combustion chamber. In the latter half of the compression stroke, the combustible mixture in the combustion chamber flows into the accumulation chamber to accumulate the combustible mixture under high pressure, which is spouted out into the combustion chamber at the next cycle.
摘要:
An internal combustion engine exhaust gas system includes a filter arranged in an exhaust passage of the internal combustion engine, a fuel adding valve which is arranged upstream of the filter and supplies fuel into the exhaust passage, and a low-pressure exhaust gas recirculation apparatus that removes some of the exhaust gas from downstream of the filter as EGR gas. An EGR rate is controlled taking into account the amount of fuel supplied by the fuel adding valve such that an oxygen concentration of intake gas, which is drawn into a cylinder of the internal combustion engine in a state in which the EGR gas that is introduced by the low-pressure exhaust gas recirculation apparatus is mixed with air introduced into an intake passage, is constant before and after fuel is supplied by the fuel adding valve.
摘要:
An object of the present invention is to control the discharge amount of unburned fuel components in the internal combustion engine. According the present invention, the number of times of execution of sub fuel injection is changed based on the operation range within which the operation state of the internal combustion engine falls so that the lower the engine load of the internal combustion engine is, and the lower the number of engine revolutions of the internal combustion engine is, the more the number of times of execution of sub fuel injection is increased. Furthermore, the lower the atmospheric pressure is, the lower the temperature of the cooling water of the internal combustion engine is, or the lower the temperature of the intake air of the internal combustion engine is, the more an operation range in which the number of times of execution of sub fuel injection is large is expanded to higher loads and higher revolutions.
摘要:
An object of the present invention is to control the discharge amount of unburned fuel components in the internal combustion engine. According the present invention, the number of times of execution of sub fuel injection is changed based on the operation range within which the operation state of the internal combustion engine falls so that the lower the engine load of the internal combustion engine is, and the lower the number of engine revolutions of the internal combustion engine is, the more the number of times of execution of sub fuel injection is increased. Furthermore, the lower the atmospheric pressure is, the lower the temperature of the cooling water of the internal combustion engine is, or the lower the temperature of the intake air of the internal combustion engine is, the more an operation range in which the number of times of execution of sub fuel injection is large is expanded to higher loads and higher revolutions.