摘要:
The present invention provides a sensor installation structure which remarkably facilitates installation of a plurality of sensors disposed on the inlet pipe side of an engine and enables each of the sensors to be positioned in an accurate measuring position. The sensor module unit is integrally provided with a plurality of sensors necessary for fuel supply control and intake-air flow rate control in an internal-combustion engine, and has an intake-air temperature sensor holding portion installed with an intake-air temperature sensor, at least one of a throttle position sensor holding portion installed with a position sensor to detect an opening angle of a throttle valve in an intake throttle apparatus and an intake-air pressure sensor holding portion installed with an intake-air pressure sensor, and a unit main body that integrally accommodates the intake-air temperature sensor holding portion, and at least one of the throttle position sensor holding portion and the intake-air pressure sensor holding portion to position in respective predetermined arrangement positions in the unit, whereby each of the plurality of sensors is positioned in a predetermined measuring position in the throttle apparatus when the unit main body is installed in the vicinity of a throttle axis of the intake throttle apparatus.
摘要:
The invention relates to a sensor and an electronic throttle valve unit using said sensor, wherein at least two arcuate magnetic circuitry members (13, 14) are installed along the rotation axis of the throttle valve shaft (3) as if the arcuate magnet fixed on the throttle valve shaft (3) is positioned between them. Members (13, 17) constituting the magnetic circuitry are mounted on the resin gear cover (16) to be installed on the body (1) of the EC throttle. Magnetic material (for example, sintered metal) used for the magnet is included in the resin molded gear members (12) to be fixed on the throttle valve shaft (3), and then when the resin cools down, the magnetic material (for example, sintered metal) is subjected to intense magnet force and magnetized. Control parameters of an internal combustion engine are adjusted according to how much the arcuate magnet fixed on the throttle valve shaft (3) is moved into or out of the arcuate groove formed by the arcuate magnetic circuitry members.
摘要:
An internal combustion engine includes a direct injector for injecting fuel directly into a combustion chamber of the engine, an intake passage injector for injecting fuel into an intake passage of the engine, and a vaporized fuel processing unit for purging purge gas containing a vaporized fuel into the intake passage. A fuel injection control apparatus includes a detecting section and an injection control section. The detecting section detects the amount of the vaporized fuel in the purge gas. The injection control section changes a fuel injection mode of at least one of the direct injector and the intake passage injector depending on the detected amount of the vaporized fuel. As a result, hampering of engine combustion due to purge gas is suppressed.
摘要:
An exhaust gas purifying system for an automotive internal combustion engine (1). The exhaust gas purifying system comprises a particulate filter (13) disposed in an exhaust gas passageway (12) of the engine to collect particulate in exhaust gas flowing through the exhaust gas passageway (12). The collected particulate is burnt off to be removed by raising a temperature of exhaust gas in a condition in connection with the particulate filter (13). A plurality of devices (3,8,11,51) are provided for raising the temperature of exhaust gas to be introduced into the particulate filter (13) through the exhaust gas passageway (12) when the collected particulate is burned off to be removed. Additionally, a control unit (15) is configured to select at least one of the devices (3,8,11,51) in accordance with an engine operating region and preferentially operate the selected at least one of the devices (3,8,11,51) for raising the exhaust gas temperature.
摘要:
A plurality of intake air amount control means (17, 19, 21) for controlling an amount of air drawn into a combustion chamber in association with a depression stroke of an accelerator pedal (15) are provided. Each of the intake air amount control means responds to a change in depression stroke of the accelerator pedal after the lapse of a predetermined delay period.
摘要:
A control device switches an engine between normal operation mode and special operation mode. In the normal operation mode, an independent cylinder configuration is formed to produce combustion independently in individual cylinders. In the special operation mode, a two-cylinder interconnect configuration is formed so that burned gas discharged from preceding cylinders currently in an exhaust stroke is introduced into following cylinders currently in an intake stroke through intercylinder gas channels, a lean mixture having a high air-fuel ratio is combusted in the preceding cylinders, and a mixture produced by supplying fuel to the burned gas is combusted in the following cylinders. When the engine is switched between the special operation mode and the normal operation mode, the control device selects transitional operation mode, in which the two-cylinder interconnect configuration is formed, and interrupts combustion in the preceding cylinders while producing combustion in the following cylinders by compression ignition.