Air/ Fuel Ratio Mixer MOTORTECH AIR/FUEL RATIO MIXER reliable ∙ efficient ∙ worldwide Try the alternative. Call the nearest MOTORTECH sales partner for more informat

MOTORTECH AIR/FUEL RATIO MIXER VariFuel2 − Air/Fuel Ratio Mixer The VariFuel2 is a high-tech variable Venturi type mixer that can constantly adjust to any fuel changes and allows the engine to operate at its most efficient point. Series 100, 140, 200 and 250 are available for engines with an air requirement up to 5.200 m3/h. Coupled to an air/ fuel ratio controller, lean-burn or stoichiometric, it precisely regulates the mixture. It is very popular for applications with constant changes in calorific value of fuel. VariFuel2 uses a high precision stepper motor drive with an exclusive reprogrammable...

Functional Description Basic Design Regulation of the Air/Fuel Mixture The main task of the gas mixer is to mix the fuel (gas) and air so that the gas engine achieves optimal combustion. Here, the decisive optimization parameters are a high degree of efficiency and low emissions that comply with relevant regulations. The fuel (gas) is drawn into the nozzle via the adjustable openings 2 in a fuel ring 3 . The openings of the fuel ring are adjusted using a drive belt 4 either manually or, normally, via a stepper motor, depending on the VariFuel2 type. The stepper motor 5 can be controlled using...

System Overview MOTTIR-TECM SPEED CONTRI Required Accessories Accessories Description BFIowbody © ITB throttle body with © Air filter H Gas inlet flange integrated stepper motor B Wiring harness ® VariSpeed300 speed controller

Operating Range Please consult the factory or your nearest MOTORTECH® Sales Partner to get the correct VariFuel2 series, specified for your engine application. Question Form to identify your suitable VariFuel2 Air/Fuel Ratio Mixer: Engine manufacturer Engine model Stroke □ 2 stroke □ 4 stroke Cylinder arrangement □ In-line engine □ V-engine Fuel consumption

Description 1 Stepper motor 2 Inlet nozzle 3 Flow body (two part) 4 Threaded rod 5 Self-locking nut Flow Bodies In order to adjust the airflow, differently sized flow bodies are used, depending on the application Outlet flanges for easy connection of a VariFuel2 air/ fuel ratio mixer to a gas engine Gas inlet flanges for connection of the gas train to a VariFuel2 air/ fuel ratio mixer ∙ Flow bodies are made of aluminum. If their diameter is 60 mm and above, they are made of highly resistant thermoplastic material. Outlet Flange Kits ∙ Standard and engine-specific types are available. ∙ Variants...

MOTORTECH STEPPER MOTOR DRIVER CONTROL VariStep3 – Stepper Motor Driver Control The stepper motor driver control developed by MOTORTECH guarantees the ideal control of the various types of MOTORTECH VariFuel2 air/gas mixers and throttle bodies with integrated stepper motor. • Precise mixer and throttle adjustment due to microstep operation • LEDs displaying unit status and activity • Combination of several units without signal amplifier/splitter • Integrated CANopen and Modbus RTU interface • Configuration via MICT software • Error data logging • Compact design • Plug-in terminals • Easy access...

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