초록 ▼

An air induction system (10) for use with an internal combustion engine (E) including an intake is disclosed. The system (10) includes a supercharger (12) and a valve assembly. The valve assembly comprises a valve (14) and a valve control mechanism (16). The supercharger (12) receives air through a

An air induction system (10) for use with an internal combustion engine (E) including an intake is disclosed. The system (10) includes a supercharger (12) and a valve assembly. The valve assembly comprises a valve (14) and a valve control mechanism (16). The supercharger (12) receives air through a supply opening (18), pressurizes it, and discharges it through an exhaust opening (20). The valve (14) is in communication with the supply opening (18) to control air supply thereto. The control mechanism (16) is coupled to the valve (14) and causes it to vary the air supply to the opening (18) in response to air pressure conditions downstream from the supercharger (12). In one embodiment, the control mechanism (16) varies the air supply responsive to air pressure in the intake in order to both throttle the supercharger (12) as well as substantially eliminate undesirable surge conditions therein. In another embodiment, the control mechanism (118) varies the air supply responsive to air pressure in the inlet (110) of a turbocharger (106) to provide supercharged air thereto at a substantially constant pressure.

대표청구항 ▼

An air induction system (10) for use with an internal combustion engine (E) including an intake is disclosed. The system (10) includes a supercharger (12) and a valve assembly. The valve assembly comprises a valve (14) and a valve control mechanism (16). The supercharger (12) receives air through a

An air induction system (10) for use with an internal combustion engine (E) including an intake is disclosed. The system (10) includes a supercharger (12) and a valve assembly. The valve assembly comprises a valve (14) and a valve control mechanism (16). The supercharger (12) receives air through a supply opening (18), pressurizes it, and discharges it through an exhaust opening (20). The valve (14) is in communication with the supply opening (18) to control air supply thereto. The control mechanism (16) is coupled to the valve (14) and causes it to vary the air supply to the opening (18) in response to air pressure conditions downstream from the supercharger (12). In one embodiment, the control mechanism (16) varies the air supply responsive to air pressure in the intake in order to both throttle the supercharger (12) as well as substantially eliminate undesirable surge conditions therein. In another embodiment, the control mechanism (118) varies the air supply responsive to air pressure in the inlet (110) of a turbocharger (106) to provide supercharged air thereto at a substantially constant pressure. irst execution of the cylinder-stroke identification. 2. The fuel injection control device as defined in claim 1, wherein the device further comprises a fourth sensor which generates a signal corresponding to a specific position in a specific stroke of each cylinder, and the controller is further programmed to control the fuel injectors to perform the preliminary fuel injection during a period between a first generation of the signal by the fourth sensor and the first execution of the cylinder-stroke identification. 3. The fuel injection control device as defined in claim 1, wherein each cylinder is equipped with an intake valve which, when opened, connects the cylinder with the intake port and, when closed, disconnects the cylinder from the intake port, the device further comprises a fourth sensor which generates a signal corresponding to a specific position in a specific stroke of each cylinder, and the controller is further programmed to control the fuel injectors to sequentially perform a subsequent fuel injection for a cylinder with the intake valve closed, in response to the signal generated by the fourth sensor. 4. The fuel injection control device as defined in claim 3, wherein the controller is further programmed to control the fuel injectors to sequentially perform the subsequent fuel injection for the cylinder in the exhaust stroke. 5. The fuel injection control device as defined in claim 3, wherein the controller is further programmed to set a start timing of the primary injection to be simultaneous with the first execution of the cylinder-stroke identification and set a start timing of the subsequent fuel injection at a timing a predetermined period later than the signal generated by the fourth sensor. 6. The fuel injection control device as defined in claim 5, wherein the controller is further programmed to determine if one of the cylinders has performed the combustion of fuel, control the fuel injectors, when one of the cylinders has performed the combustion of fuel, to start performing a normal sequential fuel injection wherein a start timing of the fuel injection is set by a process of first determining an end timing and an injection period of the sequential fuel injection, and then subtracting the injection period from the end timing. 7. The fuel injection control device as defined in claim 6, wherein the controller is further programmed to count a signal generated by the fourth sensor, and determine that one of the cylinders has performed the combustion of fuel when a number of signals generated by the fourth sensor has reached a predetermined number. 8. The fuel injection control device as defined in claim 6, wherein the controller is further programmed to perform the normal sequential fuel injection for a cylinder in the exhaust stroke. 9. The fuel injection control device as defined in claim 6, wherein the controller is further programmed to determine if the temperature is lower than a second predetermined temperature which is lower than the first predetermined temperature, and control the fuel injectors to perform a sequential fuel injection for a cylinder in the intake stroke when the temperature is lower than the second predetermined temperature before performing the normal sequential fuel injection. 10. The fuel injection control device as defined in claim 9, wherein the device further comprises a fifth sensor which detects a rotation speed of the engine and the controller is further programmed to control the fuel injectors to stop performing the sequential fuel injection for the cylinder in the intake stroke and start performing the normal sequential fuel injection in a cylinder in the exhaust stroke when the rotation speed has reached the predetermined rotation speed. 11. The fuel injection control device as defined in claim 1, wherein the controller is further programmed to determine if the temperature is lower than a second predetermined temperature which is lower than the first predetermined t