Accumulator and Cooler Division

Parker  Cooling Systems Use Proven and Reliable Technologies to Help Meet Regulations

Cleveland, OH  - October 6, 2014  -- Parker Hannifin Corporation, the global leader in motion and control technologies, will demonstrate two fan cooling systems at the APTA Expo October 13-15 in Houston, Texas. With the implementation of Tier IV emissions regulations, engine cooling systems have become very important to vehicle designers. Parker has many reliable and proven technologies that can help customers meet these regulations.


The Parker Transit Bus E-fan Cooling System improves fuel efficiency over standard fixed displacement hydraulic fan drives or mechanical drives by optimizing engine temperature through zone cooling. The controller communicates directly with the J1939 communication bus, and the potential of thermal events due to hydraulic fan drive are eliminated.


The Parker Transit Bus Variable Hydraulic Fan Cooling System improves fuel efficiency over standard fixed displacement hydraulic fan drives by optimizing engine temperature using the variable fan speed independent of engine speed. This system uses an electric controlled variable displacement pump that also communicates with the engine, transmission etc. via J1939 communication bus. Besides substantial fuel savings, it has more flexibility during installation over the traditional mechanical fan drives.


Multiple zones in the cooling systems can be used to cool the engine coolant, and charge air from the turbocharger. Visit the Parker Booth (#1127) to learn more about these cooling systems.


With annual sales of $13 billion in fiscal year 2014, Parker Hannifin is the world’s leading diversified manufacturer of motion and control technologies and systems, providing precision-engineered solutions for a wide variety of mobile, industrial and aerospace markets. The company employs approximately 57,500 people in 50 countries around the world. Parker has increased its annual dividends paid to shareholders for 58 consecutive fiscal years, among the top five longest-running dividend-increase records in the S&P 500 index. For more information, visit the company’s website at or its investor information website at