초록 ▼

A control system for a dual fuel engine that can operate in either dual fuel mode or in diesel only mode includes two controllers. One controller controls operation of the gaseous fuel supply system, and the other controls the liquid fuel supply system. Each controller receives signals from sensors

A control system for a dual fuel engine that can operate in either dual fuel mode or in diesel only mode includes two controllers. One controller controls operation of the gaseous fuel supply system, and the other controls the liquid fuel supply system. Each controller receives signals from sensors monitoring particular engine operation characteristics and is able to transmit the data it collects to the other controller by way of a broadband communications link such as a controller area network (CAN). When the engine is operating in dual fuel mode, one controller directly controls the gaseous fuel supply and also controls the liquid fuel supply by its control of the other controller. When the engine is operating in diesel only mode, the other controller controls all aspects of engine operation. A method of controlling operation of a dual fuel engine is also disclosed.

대표청구항 ▼

A control system for a dual fuel engine that can operate in either dual fuel mode or in diesel only mode includes two controllers. One controller controls operation of the gaseous fuel supply system, and the other controls the liquid fuel supply system. Each controller receives signals from sensors

A control system for a dual fuel engine that can operate in either dual fuel mode or in diesel only mode includes two controllers. One controller controls operation of the gaseous fuel supply system, and the other controls the liquid fuel supply system. Each controller receives signals from sensors monitoring particular engine operation characteristics and is able to transmit the data it collects to the other controller by way of a broadband communications link such as a controller area network (CAN). When the engine is operating in dual fuel mode, one controller directly controls the gaseous fuel supply and also controls the liquid fuel supply by its control of the other controller. When the engine is operating in diesel only mode, the other controller controls all aspects of engine operation. A method of controlling operation of a dual fuel engine is also disclosed. rther comprising a display unit, wherein the controller supplies predetermined control signals according to the manipulated states of the knobs to the display unit so as to cause the display unit to display an image corresponding to the external force loaded on the knobs. 7. The vehicle-mounted device control unit according to claim 2, wherein the controller synchronously supplies the control signals according to the manipulated states of the knobs to the actuators, and the display unit. 8. The vehicle-mounted device control unit according to claim 2, wherein the controller synchronously supplies the control signals according to the manipulated states of the knobs to the actuators and the loudspeaker. 9. The vehicle-mounted device control unit according to claim 2, wherein the controller is configured integrally with the manual input device. 10. The vehicle-mounted device control unit according to claim 2, wherein the knobs provided are a joystick type knob and a rotary knob, wherein a first actuator to load an external force onto the joystick type knob and a second actuator to load an external force onto the rotary knob are provided as the actuators, and wherein a first detecting device to detect a manipulated state of the joystick type knob and a second detecting device to detect a manipulated state of the rotary knob are provided as the detecting devices. 11. The vehicle-mounted device control unit according to claim 2, wherein a loudspeaker provided on vehicle-mounted audio equipment is used as the loudspeaker. 12. A vehicle-mounted device control unit comprising: an electrical appliance selection switch to select an electrical appliance having various functions; a manual input device to regulate the various functions of the electrical appliance selected with the switch; a display unit; and a controller, wherein signals from the electrical appliance selection switch and manual input device are supplied to the controller, the controller controls the manual input device and the display unit, wherein the manual input device is provided with knobs to be manipulated by a user, actuators to load an external force onto the knobs and detecting devices to detect manipulated states of the knobs, and wherein the controller supplies predetermined control signals according to the manipulated states of the knobs to the actuators and the display unit so as to load an external force onto the knobs and cause the display unit to display an image corresponding to the external force loaded on the knobs. 13. The vehicle-mounted device control unit according to claim 12, wherein the controller synchronously supplies the control signals according to the manipulated states of the knobs to the actuators and the display unit. 14. The vehicle-mounted device control unit according to claim 12, wherein the controller is configured integrally with the manual input device. 15. The vehicle-mounted device control unit according to claim 12, wherein the knobs provided are a joystick type knob and a rotary knob, wherein a first actuator to load an external force onto the joystick type knob and a second actuator to load an external force onto the rotary knob are provided as the actuators, and wherein a first detecting device to detect a manipulated state of the joystick type knob and a second detecting device to detect the manipulated state of the rotary knob are provided as the detecting devices. ng to an average value of motor current detection values over a time period and increases or decreases the motor current by detecting that a steering is in the vicinity of a maximum steering angle based on the detected steering torque.