Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02D—CONTROLLING COMBUSTION ENGINES
  • F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
  • F02D31/001—Electric control of rotation speed
  • F02D31/007—Electric control of rotation speed controlling fuel supply
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
  • F02B3/00—Engines characterised by air compression and subsequent fuel addition
  • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Definitions

• the invention relates to a device for regulating the speed of an injection internal combustion engine, in particular a diesel engine, with a subsequent step transmission depending on operating variables, such as e.g. Speed, boost pressure, outside pressure, engine temperature, outside temperature, fuel temperature or the like. by adjusting the injection quantity, wherein sensors for the operating variables, for the accelerator pedal position and for the transmission are electrically connected to a microcomputer and the output of the microcomputer is connected to an actuator influencing the injection quantity.
• operating variables such as e.g. Speed, boost pressure, outside pressure, engine temperature, outside temperature, fuel temperature or the like.
• the device according to the invention is essentially characterized in that the transmitter for the transmission is a transmitter that signals switching operations, the signal of which has priority over the signal for the accelerator pedal position.
• the speed is adjusted using largely inertia-free electronic components enables an extremely rapid reduction in the speed when downshifting or increasing the speed when shifting up.
• this regulation can be carried out extremely precisely without difficulty, including any number of operating parameters, and the control variable supplied by the microcomputer can be transferred to the actuator for the delivery rate and thus the correct setting of the speed can be carried out very quickly.
• the position of the accelerator pedal must be ignored, and it therefore enjoys it Switching signaling signal priority over the signal for the accelerator pedal position. Since the translation of conventional gearboxes from one gear to the next is generally constant for an engine over all available levels, it is generally not necessary for the microcomputer to be provided with signals indicating which gear level is switched to which gear level becomes. Rather, for the correct setting of the speed it is sufficient to signal whether the shifting operation represents an upshift by one gear or a downshift by one gear. With automatic transmissions, the shift is usually from one stage to the next. In the case of manual transmissions, it can be advantageous to provide the microcomputer with a signal as to whether a gear is skipped during the shifting process. Such switching operations are not the rule.
• the respective speed of the motor vehicle can also be taken into account in a simple manner due to the use of a microcomputer by using the microcomputer to measure the output speed of the Gearbox is connected.
• the design can be such that a speed sensor interacts with the speedometer shaft, the signal of which is fed to the microcomputer.
• the transmitter for switching the transmission is designed as a capacitive or inductive proximity switch.
• the delivery rate is usually adjusted by adjusting a regulating sleeve using a control rod.
• a stepper motor is controlled by the microcomputer, which ensures the correct position of the control rod. Since, depending on the signal coming from the transmission, an increase or decrease in speed is required, this stepper motor must be non-positively connected to the control rod in both adjustment directions of the control rod.
• the measurement value for the speed can be recorded in a structurally simple manner by arranging inductive or capacitive sensors on the pump piston shaft. However, a decrease in the measured value for the speed at the starter ring results in better dynamics.
• measured values for the boost pressure or the air pressure, the air temperature, the exhaust temperature, the position of the damper for the exhaust gas recirculation, the fuel temperature or the like can be used as operating variables.
• a pressure transducer with a capacitive or inductive transducer opposite the pressure membrane can be used, for example, to measure the boost pressure or air pressure.
• Constant current sources with temperature-dependent current can be used in a simple manner for the measurement of temperatures, such as the air, fuel or exhaust temperature.
• temperatures such as the air, fuel or exhaust temperature.
• a conventional thermocouple that is to say a passive element such as a PTC thermistor or thermistor, can be used in a simple manner.
• the storage flap installation for the exhaust gas recirculation can in turn be detected by a capacitive or inductive proximity switch.
• the transducer for the accelerator pedal position can be designed as an angle encoder, inclinometer or potentiometer.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
• Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
• Combined Controls Of Internal Combustion Engines (AREA)

Applications Claiming Priority (2)

Publications (2)

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ID=3552883

Family Applications (1)

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Cited By (1)

Families Citing this family (3)

Citations (3)

• 1981
  • 1981-07-01 EP EP81890112A patent/EP0051058A3/fr not_active Withdrawn
  • 1981-07-09 JP JP10632881A patent/JPS5751930A/ja active Pending

Patent Citations (3)

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