摘要:
PROBLEM TO BE SOLVED: To prevent an occupant of a vehicle from feeling a sense of incongruity due to torque shock caused by changeover of used fuel to the greatest possible extent when the used fuel of an engine is automatically changed over, in a vehicle composed by mounting a dual fuel engine capable of changing over the used fuel from a gas fuel to gasoline and vice versa. SOLUTION: When the changeover of the used fuel is determined, the changeover of the used fuel is annunciated to the occupant of the vehicle (step S11); and the changeover of the used fuel is executed after the annunciation (step S15). COPYRIGHT: (C)2007,JPO&INPIT
摘要:
A vehicle powertrain (1) has an internal combustion engine (2) combusting first fuel (6) in a first mode or second fuel (5) in a second mode and generating driving torque to vehicle wheels (18). Method comprises supplying first fuel (6) into combustion chambers of the internal combustion engine (2) in the first mode, determining to switch from the first mode to the second mode based on vehicle driving condition, stopping to supply the first fuel (6) into the combustion chambers when it is determined to switch to the second mode, suspending fueling into the combustion chambers for a predetermined period, and resuming the fueling with the second fuel (5) after the predetermined period.
摘要:
PROBLEM TO BE SOLVED: To provide a fuel property discriminating system for discriminating whether or not fuel fed to a working machine is the regular fuel to appropriately control by analyzing a discrimination result. SOLUTION: The fuel fed from an oil nozzle 8 flows into a fuel tank 2 via a fuel receiving part 2A. A fuel property detecting means 1B measures the property of the fed fuel at a predetermined measuring timing (feeding time). A measured data generating means 1C generates measured data based on the measured result, a fuel remaining quantity (1E), and environmental temperature (1F). A measured data analyzing means 1D executes restriction of engine output (1G), warning to a user (1H), and change of user evaluation (1I). COPYRIGHT: (C)2008,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a controller for a power train capable of preventing occurrence of back-fire and abnormal combustion when switching fuel from gasoline to gas fuel. SOLUTION: In this controller for the power train provided with an engine using double fuel by gasoline and gas fuel, fuel switching from gasoline to gas fuel accompanying with fuel supply cut is performed to stop supply of gasoline into the engine in accordance with satisfaction of predetermined switching conditions for switching fuel from gasoline to gas fuel and supply gas fuel into the engine after a predetermined period of time elapses. During fuel supply cut, reduction of the number of revolutions of the engine being smaller than a predetermined value is suppressed. COPYRIGHT: (C)2006,JPO&NCIPI
摘要:
In a machine wherein a plurality of diesel generators are driven such as a marine vessel, a switching operation from a low-sulfur fuel to a general fuel loaded on the machine (and vice versa) is simplified. An exhaust gas purification system which is equipped with a NOx catalyst (62) accelerating the reduction of NOx contained in an exhaust gas from a plurality of electric power-generating engines (12), a urea-water injection nozzle (47) supplying urea-water for reducing NOx to the exhaust gas, and an electric power transducer (15) detecting the concentration of NOx in the exhaust gas on the basis of the electric power generation by electric power generators (13) that are driven by the electric power-generating engines (12). The system is further equipped with an engine controller (80) controlling the driving of each of the electric power-generating engines (12) and a supply-switching electromagnetic valve (81) selectively switching a low-sulfur fuel to a general fuel (and vice versa) as the fuel to be supplied to each of the electric power-generating engines (12). The system is designed so that the engine controller (80) controls the switching by the supply-switching electromagnetic valve (81).
摘要:
PROBLEM TO BE SOLVED: To simplify work for changeover between low-sulfur fuel and general fuel mounted in a machine such as a ship which drives a plurality of diesel generators. SOLUTION: This exhaust emission control system includes a NOx catalyst 62 for promoting the reduction of NOx in exhaust gas from a plurality of generating engines 12, a urea water injection nozzle 47 for supplying NOx reducing urea water to the exhaust gas, and a power transducer 15 for detecting the concentration of NOx in the exhaust gas from the generated power energy of the generators 13 which are driven by the generating engines 12. The system also includes an engine controller 80 for controlling the drive of the generating engines 12, and a supply changeover solenoid valve 81 for selectively changing over fuel supplied to the generating engines 12 between low-sulfur fuel and general fuel. The engine controller 80 executes the changeover control of the supply changeover solenoid valve 81. COPYRIGHT: (C)2010,JPO&INPIT
摘要:
PURPOSE:To control the fuel to an optimum viscosity and further remove the shock due to the temperature by providing a fuel viscosity detector in a program temperature adjusting device upon changeover of the fuel supplied to a marine internal combustion engine, and determining the program termination point by the set viscosity. CONSTITUTION:The fuel is supplied to the engine 10 from a tank 1 for storing A-heavy oil of a low viscosity for use in starting and stopping the engine, and a tank 2 for storing C-heavy oil of a high viscosity for use in navigation. In a case of changeover from A-heavy oil to C-heavy oil, when a changeover switch 13 is changed over to C-side, the program temperature adjusting meter 15 sends a temperature raising signal to a heater 6. When the temperature reaches the set temperature of C-heavy oil, the changeover valve 3 is changed over to C-side by an actuater 4, to maintain the temperature at a predetermined value. When the detected viscosity of the fuel reaches a set value with the incream of C-heavy oil, the temperature is again made coincident with the set value. Upon this time, the program is terminated. By this procedure, the fuel can be controlled to an optimum viscosity.