ATB Series for Gaseous Engines
  • High performance throttle body and actuator in one
  • Capable of withstanding the harshest gas types
  • Sizes from 25 to 95mm
  • All sealed to 5.0 Bar for naturally aspirated or turbocharged applications
  • High-temp and position feedback versions available
 
                     
APPLICATION OF THE MONTH: 

Natural Gas Fueled Cogeneration Unit Powered By Kubota WG752 - 3 Cylinder, 0.74L Engine Equipped with GAC


  • ATB251T1N-12 - Integrated Actuator / Throttle Body

  • AFR210 Integrated Air/Fuel Ratio Control and Governor

  • MXSB20-STM Venturi Mixer and Stepper Fuel Control Valve Assembly 
                             

Cogeneration (cogen) through combined heat and power is the simultaneous production of electricity with the recovery and utilization of heat.  Cogeneration is a highly efficient form of energy conversion and achieves a primary energy savings of approximately 40% compared to the separate purchase of electricity from a utility company’s electrical grid and a separate gas boiler for onsite heating.

Natural gas fueled cogen units are typically used for commercial, residential and industrial applications and can easily be configured with a GAC ATB (integrated actuator / throttle body assembly) controlled by a variety of either digital or analog governors with an ‘Anti-Wind-Up’ PID feature that minimizes RPM over-shoot and/or under-shoot.  The ‘Anti-Wind-Up’ PID is specifically designed for gaseous fueled engines.

GAC offers a variety of engine control systems ranging from fixed speed governors to combined air-fuel ratio and speed control systems that use the feedback from an exhaust oxygen sensor to maintain the specified air-fuel ratio.


FAQ: HOW DO I ADJUST THE IDLE AND MAX SPEEDS ON MY ATB THROTTLE BODY ACTUATOR?

An adjustable Idle Stop screw (Min Throttle Adjustment) and Max Throttle Adjustment are provided to set a fixed opening if desired.  The diagram below generally shows where the adjustments can be found on each ATB model. NOTE: The Max Throttle Stop is preset to 65° rotation.




  • You must completely remove the first sealing screw.  This will give you access to the inner set screw.

  • Using a 2.5mm Hex wrench, turning the wrench clockwise will increase the fixed throttle opening.

  • Adjustment is complete once you have replaced the sealing screw.  Apply Loctite 518 or equivalent.  The sealing screw should be tightened to snug plus ¼ turn.

 


 GAC WILL BE CLOSED FRIDAY, MARCH 30TH

AND WILL REOPEN APRIL 2ND, 2018