With diesel engine technology progressing to higher power densities, an opportunity existed for a new transmission for pressure pumping applications.

 

PREP in partnership with Cummins developed a 3,000hp 8-speed transmission with unique technological advances for the fracturing industry.
 

Based on technology developed in Formula 1 racing and automotive applications, PREP developed a dual lay shaft design with an innovative gear shift actuation mechanism and an industry-first TOPS gears; deep ratio to provide precise control of pump pressure at engine idle during pressure testing.

 

The QTR transmission is the first 3,000hp application-specific transmission in the industry, designed to provide superior performance and durability in the high-demand pressure pumping industry.

 

The unique lay-shaft design provides the exact gear ratio’s required by the operator to match both the engine and pump performance. The dual clutch technology keeps torque output constant during shift sequences, and offers a seamless transfer-shift of torque.