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Curtiss-Wright’s industrial division has supplied Williams Controls electronic throttles to Polaris Industries for use on its RANGER and RZR XP 1000 vehicles.

Polaris vehicle

As vehicle volumes increase, Polaris Industries, a designer and manufacturer of off-road vehicles (ORVs), including all-terrain vehicles (ATVs), snowmobiles, motorcycles and on-road electric/hybrid powered vehicles, is opting for Williams Controls throttles as part of its decision to move away from conventional push/pull mechanical systems to electronic control.

Engineering teams from both companies worked together for almost 18 months to re-engineer an existing Williams Controls pedal design, with the resulting electronic pedal needing to be sized and ergonomically shaped to suit the compact in-cabin dimensions of the RZR XP 1000. During the product development phase, the Williams Controls team engineered a new spring design and, using its in-house rapid-prototyping facilities, an altered lever arm.

The updated specifications for the new electronic throttle also included the use of an integrated, non-contacting, Hall-effect sensor providing two independent linear output signals proportional to pedal position. This sensor provided feedback directly to Polaris’s latest throttle management system to provide improved control.

What seemed like relatively simple design changes to the existing pedal actually required a complete revalidation of the Williams Controls custom pedal to ensure its suitability for both Polaris applications. This included testing it for both US and European market requirements and a series of environmental assessments. The pedal outperformed the requirements of both companies; for the corrosion resistance test conducted in a salt fog chamber, the custom pedal exceeded Williams Controls’ own 96-hour requirement and met the Polaris requirement of 336 hours. Upon completion of the environmental testing process, Williams Controls was able to provide Polaris with working samples for pre-production and field testing.

Curtiss-Wright Industrial Group

The Curtiss-Wright Industrial Group is formed from a number established specialist companies who are experts in the design, testing and manufacture of a range of components and systems for the safe and reliable operation and control of mobile and static machinery – especially off-highway vehicles, heavy trucks, buses, military vehicles and motorsport. Within the business are four market leading brands — Penny & Giles Controls, PG Drives Technology, William Controls, and Arens Controls.

The Curtiss-Wright Industrial Group is formed from a number established specialist companies who are experts in the design, testing and manufacture of a range of components and systems for the safe and reliable operation and control of mobile and static machinery – especially off-highway vehicles, heavy trucks, buses, military vehicles and motorsport. Within the business are four market leading brands — Penny & Giles Controls, PG Drives Technology, William Controls, and Arens Controls.

Penny & Giles Controls
Delivers rugged component level solutions using the latest non-contact sensing technologies, and specialises in rotary, linear and tilt position sensors; joysticks; solenoid actuators and associated electronic signal conditioning. The business was first established in 1956 and pioneered aerospace sensing and data recording technologies with a reputation for quality, performance and reliability. The aerospace business continues today within other Curtiss-Wright business units. The company joined Curtiss-Wright in 2002.

PG Drives Technology
Delivers rugged subsystem solutions including programmable controllers and drives used in a wide variety of advanced electric-powered vehicles such as forklifts, pallet loaders, mobility scooters and wheelchairs, serving the industrial and medical markets. These products deliver precise variable power from batteries to electric drive motors, and are fully programmable to suit various motor profiles, voltages and power levels. The business was first established in 1976 and was originally part of the Penny & Giles group of companies. The company joined Curtiss-Wright in 2012.

Williams Controls
Delivers rugged component level solutions and is a leading designer and manufacturer of highly-engineered electronic sensors and electronic throttle controls for off-road equipment, heavy trucks, and military vehicles. The business was first established in 1937 and pioneered the development of the first electronic throttle control for large diesel engines, quickly becoming the world leader in the design and manufacture of electronic throttle controls for trucks and buses. The company joined Curtiss-Wright in 2012.

Arens Controls
Delivers rugged component level and subsystem solutions and is a leading designer and manufacturer of highly engineered electronic shift controls for automatic transmissions used on heavy trucks and buses. The company also designs and manufactures power management and traction systems for the emerging Hybrid Electronic Vehicle (HEV) market. The business was first established in 1939 and pioneered the development of “by-wire” vehicle control technology, and more recently power electronic drivetrain components and systems for the HEV market. The company joined Curtiss-Wright in 2013.

Curtiss-Wright Industrial Group has manufacturing sites in the US, Europe, India and China. Total customer service and support is assured via a global sales network with CWIG offices in the US, UK, Germany, India, Taiwan and China, as well as a network of distributors and agents covering other regions.

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