Smart Flow® Oil Cooling Systems

Product Features

• Brushless Electric Fans

  All of our OK series coolers feature EMP fans. EMP’s fans are brushless, controllable, reversible, and built from a cast aluminum shroud that can withstand even the harshest environments.

  Fans on temperature controlled OK models are speed controlled by the system controller based on fluid temperature feedback. This allows for optimal thermal management and little fluid temperature variation, while also helping to prevent heat exchanger clogging in dirty environments. Fan speed on PWM and J1939 CAN controlled models can be configured by the customer.

• Optional System Controller

  Temperature controlled OK models include an EMP Micro Thermal Management Controller (uTMC). The uTMC can receive inputs from sensors, or from the vehicle. It uses an advanced software algorithm to interpret inputs and provide optimal thermal control to the system. It also provides complete system diagnostics.

• Aluminum Heat Exchanger

  Heat exchangers on OK coolers are of bar/plate construction and fabricated from an aluminum alloy that has been proven through stringent testing to be superior to copper-brass construction in durability and efficiency, while also weighing less.

• Optional Integrated Wiring Harness

  Temperature controlled OK models offer as an option an integrated wiring harness assembly that will not break down or degrade when exposed to petroleum based fluids and glycol. The harness is built using connectors and interface terminals that are IP69k rated waterproof and dustproof.

• Reversible

  Air flow can be reversed periodically as a part of routine vehicle maintenance. This helps keep the heat exchanger cooling fins free of debris and functioning properly. Fan reverse can be controlled by a manual push button, as a timed event, or by ignition on.

• Configurable

  OK coolers come in both 12 and 24-volt versions to allow for easy installation on most vehicles by eliminating the need for an auxiliary power circuit. Units are also available in both pusher and puller configurations to maximize mounting location adaptability. Control strategy and fan speed can be configured as variable-speed temperature control, custom-speed PWM or J1939 CAN control, or single-speed on/off. UL and CSA approved OK versions are available upon request.

• Increased Available Engine Horsepower

  Any engine power used for cooling is directly subtracted from the horsepower available for driving the wheels, hydraulics, PTOs, etc. The OK1 series of electrified coolers manage fluid temperature while consuming much less power than a system cooled by a belt-driven fan or hydraulic fan.

• Optimized Fluid Temperature

  On temperature controlled OK system coolers, the system controller receives and interprets fluid temperature feedback and drives the fan as necessary to maintain an optimal fluid temperature. This eliminates overheating and overcooling due to changes in ambient temperature and cooling demand.

• Built In Bypass

  Our OK1 and OK2 coolers contain a built-in fluid bypass. The bypass is regulated by a 45 psi pressure valve. Its purpose is to protect the system from excessive fluid pressure differences across the heat exchanger.

• Diagnostics

  EMP-Link and J1939 CAN versions allow two-way communication to support diagnostics. J1939 CAN communications support J1939 messages defined for Secondary OBD Devices.

• Communication Protocols

  The OK series of coolers can be controlled through the following communication protocols:

  • On-Off, J1939 CAN, PWM , EMP-Link (Proprietary LIN), Temp Sensor.
  • PWM version provides tach-out feedback (RPM).
    • Note: J1939 CAN integrated FiL-11 fans available. Interim solution requires use of TMC system controller. Temp Sensor also requires use of TMC.