Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02D—CONTROLLING COMBUSTION ENGINES
  • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
  • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
  • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
  • F02D9/1035—Details of the valve housing
  • F02D9/105—Details of the valve housing having a throttle position sensor
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02D—CONTROLLING COMBUSTION ENGINES
  • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
  • F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
  • F02D2009/0201—Arrangements; Control features; Details thereof
  • F02D2009/0294—Throttle control device with provisions for actuating electric or electronic sensors
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02D—CONTROLLING COMBUSTION ENGINES
  • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
  • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
  • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
  • F02D9/1035—Details of the valve housing
  • F02D9/1055—Details of the valve housing having a fluid by-pass

Definitions

• the present invention relates to a motor control unit, preferably for single-cylinder engines.
• the engine control unit is applied to small motor and low power motorcycles.
• Control systems for single-cylinder engines are currently often used in such a way that the existing solutions of previous multi-cylinder engines from the automotive sector are adjusted by the unnecessary components in single-cylinder engines.
• the focus is always on the electronic control unit, to which the necessary functional components are electrically connected via a cable harness.
• each functional component own electrical connector and possibly even more connectors in the wiring harness available.
• the functional components are installed in different locations, resulting in assembly and cabling for the vehicle manufacturer.
• control unit board which is used for engine control, with the throttle valve in a common housing (also:
• a motor control unit preferably for single-cylinder engines, comprising a housing, a rotatably mounted in the housing
• Throttle shaft a control board integrated in the housing, and an integrated in the housing angle sensor.
• the angle sensor is used to detect an angular position of the throttle shaft.
• the angle sensor is contacted within the housing to the controller board. According to the invention, therefore, no further wiring between angle sensor and
• the control unit board in particular with a CPU arranged thereon, serves as an electronic engine control unit for the entire engine, in particular a single-cylinder engine.
• the housing in particular, in addition to the throttle shaft and the throttle valve including all elements for driving and resetting the throttle valve integrated.
• the angle sensor is used to detect the throttle position.
• Engine control unit with the module housing is built around the throttle body as a central carrier housing the entire engine control unit.
• the integration of the control device board of the electrical control device and all directly integrable components is made possible in the housing.
• Air filter box allows favorable vibration acceleration for all components. Because of the constant flow with fresh intake air also the cooling conditions for all components in the housing are optimal. Relevant characteristic of the engine control unit with the one
• Control board and the integrated sensors and actuators exist.
• the electrical connections are made directly in a suitable manner, for example by soldering, welding, crimping or PressFit technique, and molded with plastic.
• the components of the throttle may be made in parts of metallic or plastic based materials.
• the housing is preferably a one-piece injection molded part, which surrounds the control unit board and the integrated sensors normally undetachable.
• the angle sensor is arranged directly on the control unit board.
• the angle sensor is designed as a contactless angle sensor. Because of the highly integrated
• the non-contact angle sensor is advantageously provided.
• a counterpart to the non-contact angle sensor is preferably a magnet on the
• Throttle valve shaft arranged, alternatively, a magnetization of the throttle shaft is conceivable
• a tubular section open on both sides is formed in the housing as part of a suction tube.
• Throttle shaft extends transversely through this tubular portion.
• In the tubular portion is preferably on the throttle shaft
• Throttle valve arranged.
• the housing of the engine control unit forms with the tubular portion a part of the intake manifold.
• the air for the engine is sucked in via the intake manifold.
• a temperature sensor is preferably integrated in the housing.
• Temperature sensor is arranged in particular in the tubular portion. Furthermore, the temperature sensor within the housing with the
• the temperature sensor is used to measure the temperature of the intake air and is arranged in particular in the flow direction in front of the throttle valve. Furthermore, a pressure sensor is preferably integrated in the housing.
• the pressure sensor is located in the tubular portion.
• the pressure sensor is in contact with the control unit PCB inside the housing. Alternatively, it is possible to insert it directly on the controller board
• This pressure measuring element is connected via a pneumatic line with the suction tube.
• the pressure sensor or the pressure measuring element is used to detect the air pressure, in particular in
• This actuator is also integrated in the housing and contacted with the control unit board. As a result, the need for an additional amount of air at idle can be set via the control unit board. In such a case, the actuator is controlled in such a way that the additional air directly via the throttle or over a
• Bypass line can flow past the throttle.
• a minimum stop of the throttle valve is moved by the actuator.
• the actuator is actuated at a suitable point so that it can open and close a bypass line in several stages. This bypass line is
• Tank vent valve is integrated.
• the tank vent valve is also contacted within the housing with the controller board.
• Tank bleed valve a fuel tank can be vented.
• an injection valve is integrated in the housing.
• the injection valve is used for direct or indirect injection of fuel into the combustion chamber of the engine.
• integrated injection valve is integrated into the housing and contacted within the housing with the control unit board.
• Engine control unit can be integrated. These components are preferably: temperature sensor, pressure sensor, tank venting valve, Idler actuator and possibly an integration-optimized injection valve.
• the housing is designed as a plastic housing, in one-piece construction. In the plastic housing are receptacles in which the additional components are mounted. The additional components are connected directly to the controller board within the housing. As a result, the entire engine control unit is an assembly, with the integrated into the housing components no longer separately via a wiring harness
• the housing forms an assembly which is equipped with at most two electrical connectors.
• two connectors are provided with a high functionality, preferably a power connector and a signal connector are desired.
• the engine control unit according to the invention, the entire control of the engine is made.
• the ignition and optionally a knock control and detection of exhaust gas parameters and quantities derived therefrom for the mixture control by means of the control unit board can also take place.
• the electrical connection of the engine control unit to the various functional elements is preferably carried out with a larger range of functions via a power and a signal connector. In this case, it is taken into account that most high-current electrical lines are already brought together in a harness strand on the vehicle side.
• Power connector is relatively low, typically between 6 and 8 contacts; Thus, relatively high current densities can be realized with relatively small connector housings.
• the following connections are preferably provided in the power connector: continuous voltage and / or voltage and / or power ground and / or sensor ground and / or signal for ignition coil (as switching voltage or control voltage) and / or activation of an electric fuel pump and / or activation of a radiator fan
• Output signals such as ⁇ -probe signal, ⁇ -probe heating, speed sensor signal, Engine temperature, engine stop signal, MIL indicator (Malefunction Indication Lamp) and various communication lines provided.
• MIL indicator Malefunction Indication Lamp
• the signal connector typically 9 to 1 5 pins. All other signals are used internally in the housing of the engine control unit, since the components integrated in the housing are contacted directly via the control unit board. In the case of a simple range of functions in the engine and vehicle control, a unit with only one electrical connection plug is provided. With the invention presented here is intended for the manufacturer of a
• the electronic control unit control unit board
• all meaningfully integrable sensors the fuel injection valve and all elements of the air control, such as the throttle, and optionally each of the actuator for the idle position and the tank vent valve in the module
• Throttle body and control unit housing in one part, namely the housing of the engine control module summarized.
• the number of contacts and a sensibly designed connector concept enable a very compact space requirement.
• Figure 1 is a conceptual structure of an inventive
• Motor control unit according to a first embodiment with further components of a single-cylinder engine, 2 shows a first view of the engine control unit according to the invention according to the first embodiment,
• FIG. 3 two further views of the invention
• FIG. 4 shows a first view of the engine control unit according to the invention in accordance with a second exemplary embodiment
• Figure 5 is a sectional view of the engine control unit according to the invention according to the second embodiment.
• FIG. 6 shows a detailed view of FIG. 5.
• FIG. 1 shows a schematic representation of the conceptual design of the engine control unit 1.
• the engine control unit 1 is integrated in a housing 2.
• Figure 1 does not show the geometric configuration of the housing 2, but indicates which components within the housing 2 of
• Engine control unit 1 are integrated.
• FIG. 1 shows individual components of a motor 3.
• the engine control unit 1 according to the invention is preferably used in conjunction with the engine 3.
• the engine 3 comprises a piston 4 in a cylinder.
• the piston 4 defines a combustion chamber 5.
• air is sucked in via a suction pipe.
• a fuel mixture is ignited via a spark plug 7.
• the spark plug 7 is connected to a corresponding ignition coil 8.
• a phase sensor 9 is optionally located in the engine 3.
• An ⁇ -probe 10 is integrated on an exhaust side of the engine 3.
• the engine 3 further optionally includes a knock sensor 11 and a mandatory speed sensor 12.
• FIG. 1 also shows a tank 13 for the fuel.
• a Fuel pump 14 integrated in the tank 13, or in the connection between the tank and the injection valve 22 is a Fuel pump 14 integrated.
• the tank 13 is optional via a
• ECU board 16 with connection for Canbus 17 and diagnostic lamps 18, throttle valve 19, throttle position sensor 28/29, temperature sensor 20,
• the central component of the engine control unit 1 is the housing 2.
• a tubular portion 32 is formed. This tubular portion 32 forms part of the suction pipe 6.
• a throttle shaft 27 is rotatably arranged in the tubular portion 32.
• the throttle valve 19 is the throttle valve 19. At an exposed end of the
• Throttle valve shaft 27, a lever 30 is arranged.
• control unit board 16 is integrated with a CPU 26.
• the angle sensor 28 is used for non-contact position detection of the throttle shaft 27 and the throttle valve 19.
• a magnet 29 is attached to the throttle shaft 27 or the throttle shaft 27 magnetized in a suitable manner.
• an optional temperature sensor 20 is integrated into the housing 2. As FIG. 3 shows, the temperature sensor 20 is ideally located in
• the temperature sensor 20 is contacted in the interior of the housing 2 fixed to the control unit board 16.
• FIG. 3 shows the integration of the injection valve 22 into the housing 2 of the engine control unit 1.
• the injection valve 22 may be a conventional injection valve, in which case a fixation on the upper O-ring of the
• Injector 22 by means of a defined fuel meter and an electrical connector on the wiring harness is necessary.
• a defined fuel meter and an electrical connector on the wiring harness is necessary.
• the actuator 24 is used to adjust a minimum stop of the throttle valve 19 or the variable cross-sectional change in an air bypass duct to
• Throttle and can thus be used to control the air demand in idle.
• the housing 2 is a closed one
• Tank vent valve 23 or the actuator 24 are contacted within the housing to the control unit board 1 6 and need not be connected separately via cable.
• FIG. 3 shows a plug 31.
• Motor control unit 1 one or two of the plug 31 are provided to connect the controller board 1 6 with a wire harness.
• FIGS. 4 to 6 show a second embodiment of the engine control unit 1.
• the same or functionally identical components are provided in both embodiments with the same reference numerals.
• 4 shows a first view of the engine control unit 1.
• FIG. 5 shows a sectional view of FIG. 4.
• FIG. 6 shows a detail view of FIG. 5.
• the plug 31 is opposite to the
• Injector 22 is arranged.
• the actuator 24 is located on the underside of the module housing 2.
• Fig. 6 shows in detail the angle sensor 28 and the magnet 29 on the end face of the throttle shaft 27th

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=49385223

Family Applications (1)

Country Status (3)

Cited By (2)

Families Citing this family (2)

Citations (10)

Family Cites Families (2)

• 2012
  • 2012-11-28 DE DE102012221697.9A patent/DE102012221697B4/de active Active
• 2013
  • 2013-10-02 IN IN1447DEN2015 patent/IN2015DN01447A/en unknown
  • 2013-10-02 WO PCT/EP2013/070518 patent/WO2014082775A1/de not_active Ceased

Patent Citations (10)

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