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Air/Fuel Ratio Control Systems
In many countries of the world, alternative fuels like bio gases have taken over to become a major source for electricity production with gas engines. Due to the constantly changing quality or varying BTU levels, the demand for more sophisticated Air/Gas mixing equipment has increased. MOTORTECH has designed a line of ventury type mixers, their electronic controls and butterfly valves (throttles) to control the gas engines in a more accurate way.
Static Air/Gas Mixers
The MOTORTECH static venturi air/gas mixers (P/N 30.49.xxx.xx) are the newest variants of the existing air/gas mixer product series (P/N 30.46.xxx.xx). They have been designed to replace all variants of P/N 30.46.xxx.xx with immediate effect.
The new air/gas mixers are available in series 100-60, 140-80 and 200-120 and can be easily adapted to their respective application by using different sized flow bodies.
In addition to the flow bodies, a variety of accessories including gas adjustment screws and inlet and outlet flanges are available. This allows users to create mixing systems suitable for multiple installation environments.
Features & Advantages
• Used for a wide range of gas types: natural gas, landfill gas, sewage gas, biogas, mining gas, wood gas...
• Reduced number of parts delivers a 30% weight reductions over the previous version.
• One-piece flow bodies reduce cost and installation time.
• Two gauge ports for gas pressure measurement and impulse line connection.
• Full compatibility with VariFuel2/2+ and VariFuel3 inlet and outlet flanges.
• Casted housing and inlet parts.
• Premium quality materials.
The new air/gas mixers are available in series 100-60, 140-80 and 200-120 and can be easily adapted to their respective application by using different sized flow bodies.
In addition to the flow bodies, a variety of accessories including gas adjustment screws and inlet and outlet flanges are available. This allows users to create mixing systems suitable for multiple installation environments.
Features & Advantages
• Used for a wide range of gas types: natural gas, landfill gas, sewage gas, biogas, mining gas, wood gas...
• Reduced number of parts delivers a 30% weight reductions over the previous version.
• One-piece flow bodies reduce cost and installation time.
• Two gauge ports for gas pressure measurement and impulse line connection.
• Full compatibility with VariFuel2/2+ and VariFuel3 inlet and outlet flanges.
• Casted housing and inlet parts.
• Premium quality materials.
VariFuel2-TEM Air/Gas Mixer
For MWM® TCG 2016 V08 C, V12 C, V16 C and TBG 620 V16 Gas Engines
The VariFuel2-TEM air/gas mixer is based on the proven design of the VariFuel2 series and is specially designed for use with MWM® gas engines. Designed as a replacement and plug-and-play solution, the VariFuel2-TEM easily fits into the existing engine structure without any mechanical modifications.
In addition to full compatibility, both mechanically and in connection with existing TEM controllers, the VariFuel2-TEM contributes to an improvement of the starting behavior and mixture control via its variable fuel ring and enables low-maintenance operation over a long period of time.
The VariFuel2-TEM air/gas mixer is based on the proven design of the VariFuel2 series and is specially designed for use with MWM® gas engines. Designed as a replacement and plug-and-play solution, the VariFuel2-TEM easily fits into the existing engine structure without any mechanical modifications.
In addition to full compatibility, both mechanically and in connection with existing TEM controllers, the VariFuel2-TEM contributes to an improvement of the starting behavior and mixture control via its variable fuel ring and enables low-maintenance operation over a long period of time.
VariFuel2/VariFuel2+ Air/Gas Mixers
MOTORTECH´s VariFuel2 is a high-tech variable Venturi type air/gas mixer that can constantly adjust to any fuel changes and allows the engine to operate at its most efficient point. Series 100, 140, 200, 250, 300 and 350 are available for engines with an air requirement up to 12,000 m3/h. Coupled to an air/fuel ratio controller, lean-burn or stoichiometric, it precisely regulates the mixture. The VariFuel2 is very popular for applications with constant changes in calorific value of fuel.
VariFuel2 air/gas mixers are equipped with a high precision stepper motor which is extremely precisely actuated by the VariStep3 stepper motor driver. Different flow bodies and variable gas inlet and mixture outlet configurations allow flexible adaptation of the gas mixer to the respective application.
Varifuel2 and VariFuel2+ air/gas mixers are suitable for a wide range of gas types:
• Natural gas
• Biogas
• Landfill gas
• Sewage gas
• Wood gas
• Wellhead gas
• Mine gas
VariFuel2 air/gas mixers are equipped with a high precision stepper motor which is extremely precisely actuated by the VariStep3 stepper motor driver. Different flow bodies and variable gas inlet and mixture outlet configurations allow flexible adaptation of the gas mixer to the respective application.
Varifuel2 and VariFuel2+ air/gas mixers are suitable for a wide range of gas types:
• Natural gas
• Biogas
• Landfill gas
• Sewage gas
• Wood gas
• Wellhead gas
• Mine gas
VariFuel3
The new VariFuel3 air/gas mixer is based on the general operating principle of the VariFuel2 series, but was improved from the design perspective.
The installation of the one-piece flow bodies, for example, will be possible without completely dismantling the gas/air mixer.
Varifuel3 air/gas mixers are suitable for a wide range of gas types:
• Natural gas
• Biogas
• Landfill gas
• Sewage gas
• Wood gas
• Wellhead gas
• Mine gas
General Features
• More precise regulation due to improved fuel ring design for all fuel types
• Cast housing and inlet parts
• Optimized/reduced number of available flow bodies
• Simplified installation due to reduced weight and number of parts reduces costs and installation time
• New bayonet connector improves stability
• Full compatibility with VariFuel2 and VariFuel2+ inlet and outlet flanges
• Compatible with the MOTORTECH VariStep and VariStep3
The installation of the one-piece flow bodies, for example, will be possible without completely dismantling the gas/air mixer.
Varifuel3 air/gas mixers are suitable for a wide range of gas types:
• Natural gas
• Biogas
• Landfill gas
• Sewage gas
• Wood gas
• Wellhead gas
• Mine gas
General Features
• More precise regulation due to improved fuel ring design for all fuel types
• Cast housing and inlet parts
• Optimized/reduced number of available flow bodies
• Simplified installation due to reduced weight and number of parts reduces costs and installation time
• New bayonet connector improves stability
• Full compatibility with VariFuel2 and VariFuel2+ inlet and outlet flanges
• Compatible with the MOTORTECH VariStep and VariStep3
VariStep3 Stepper Motor Driver
The stepper motor driver developed by MOTORTECH guarantees the ideal control of the various types of MOTORTECH VariFuel2 and VariFuel2+ air/gas mixers and ITB throttle bodies with integrated stepper motor.
Features
• Precise mixer and throttle adjustment due to microstep operation
• Very fast response times
• Increased power output provides high torque and quick movement even when driving big stepper motors
• Accelerated reference run
• 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 for improved diagnostic options
• Compact design
• Plug-in terminals
• Easy access to connectors and switches
• Switch board installation on DIN rail
Features
• Precise mixer and throttle adjustment due to microstep operation
• Very fast response times
• Increased power output provides high torque and quick movement even when driving big stepper motors
• Accelerated reference run
• 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 for improved diagnostic options
• Compact design
• Plug-in terminals
• Easy access to connectors and switches
• Switch board installation on DIN rail
EmCon5 Lean-Burn Emission Controller
The EmCon5 is a lean-burn emission controller for gas engine co-generation units. It is designed to control the exhaust gas emission levels based on indirect measurements. Simply three input signals are required for the control purpose: manifold inlet pressure and temperature and engine load. A CH4 input signal is optional. Use of an oxygen sensor is not required.
Following initial measurements of the engine emission levels and successful analysis, the EmCon5 guarantees optimal operation of the gas engine at the predefined emission limits.
All controller parameters are freely programmable. The adjustments and modifications are made via the computer-program “WinScope”. The EmCon5 fits perfectly with the VariFuel2 and VariFuel2+ air/gas mixer series.
Following initial measurements of the engine emission levels and successful analysis, the EmCon5 guarantees optimal operation of the gas engine at the predefined emission limits.
All controller parameters are freely programmable. The adjustments and modifications are made via the computer-program “WinScope”. The EmCon5 fits perfectly with the VariFuel2 and VariFuel2+ air/gas mixer series.
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