The DSM Group works with OEMs to improve the low-friction tensioning system made of PA46 Stanyl® HGR2 resin, which is being used in more and more passenger cars. Compared with the traditional PA66, Stanyl® HGR2 can reduce friction by 20-40% under boundary lubrication conditions, which improves the fuel efficiency of the vehicle, further reduces the carbon dioxide emissions of the car, and makes the driving trip more “green”. 

70-80% of the energy generated by the fuel combustion of passenger cars will be lost in various forms, and mechanical friction loss is a part that cannot be ignored. In the currently used timing system, the friction of the chain and tensioner portions accounts for 43% of the total friction. Therefore, effectively reducing the friction loss of the tensioner becomes a key part of improving the fuel efficiency of the vehicle.

DSM Modified PA46 Stanyl® HGR2 resin provides a low friction, high wear resistant material solution for automotive timing chain systems. Commercial PA66 is the most commonly used material in the chain guide surface. It can replace the PA66 with Stanyl® HGR2 under boundary lubrication conditions. It can be equipped with a 5.0L V8 engine to reduce system friction by 20-40%, thus improving fuel efficiency. 0.4%, equivalent to a vehicle weight loss of 18 kg, compared with the "traditional" plastic-based steel solution, the cost is only one-tenth. In addition, Stanyl® has excellent wear resistance and fatigue resistance and is seven times longer than PA66. Whether it is at high chain tension or due to limited engine compartment space, the radius of curvature of the chain guide rails and tensioner rails is small, or when pitting wear begins due to loose chain, Stanyl® can Stability is provided throughout the life of the engine.

Stanyl® is a commercially proven superior material solution and has become the industry benchmark for automotive tensioning systems. At least six out of every ten newly produced cars use Stanyl® PA46 in their timing chain systems. Many OEMs have chosen Stanyl® HGR2 as the low-friction guideway material in the timing system of their new generation of energy-efficient turbocharged gasoline engines.

XX Motors won the 2017 SPE (American Society of Plastics Engineers) Automotive Innovation Award for its innovative Stanyl® HGR2 solution. The environmental benefits of this material program are considerable: 12,000 barrels of fuel per year or 0.5 million tons of greenhouse gas emissions. The Stanyl® HGR2 has been applied to the chain tensioner arms of the Ford F-150 and Mustang and will soon be used in XX models around the world.

Stanyl® is a family of high performance polyamide 46 products that maintain their mechanical properties for extended periods of time up to 230 °C. Stanyl® has been used in the automotive industry for nearly 20 years due to its excellent rigidity, fatigue resistance and excellent wear resistance at high temperatures. Stanyl® is used in powertrain solutions to help reduce weight and withstand high temperatures. In addition to timing systems, Stanyl® is also widely used in front-end accessory drives, clutch systems, bearings and thrust washers.