Saving Fuel With New Timing Chain

Every little detail counts when it comes to saving fuel; Michigan-based BorgWarner’s latest timing chain reduces friction to improve engine efficiency and fuel economy.

BorgWarner said its next-generation 6.35 mm inverted tooth silent engine timing chains are launching on engines from Mitsubishi, Suzuki, Hyundai, General Motors Korea and one Chinese automaker.

According to BorgWarner, the engine timing chain is designed to reduce friction, resulting in 0.3 to 0.6 percent improvement in fuel economy based on customer testing.

BorgWarner’s low-friction engine timing chains will be produced for a variety of 0.66- to 2.0-liter gasoline engines.

“As automakers began downsizing engines to improve fuel economy, BorgWarner recognized opportunities to help further improve engine efficiency by reducing power-wasting friction in the engine timing system,” said Joe Fadool, President and General Manager, BorgWarner Morse TEC. “With our state-of-the-art testing and simulation capabilities, BorgWarner has developed a new, smaller-pitch engine timing chain that reduces friction while delivering lower noise and improved durability for these tough engine environments.”

To reach these results, BorgWarner explained its low-friction engine timing chain combines inverted tooth silent chain technology with an optimized link back shape. Compared with conventional technology, the optimized link back shape reduces contact area and friction as the chain slides along the arms and guides, where most friction losses occur. In addition, super finish apertures enhance wear and efficiency performance, and what the company calls “E” polishing improves surface finish to reduce friction.