The pendulum has swung back around toward timing chains more recently, thanks to their longer lifespan. Timing Chains Last Longer, Saving Money in the Long Run Quieter and less expensive than chains, with some able to last as many as 100,000 miles, timing belts eventually became the go-to choice for automakers right up through the 1990s. Timing Belts Are Quieter and Less Expensive to Manufacture Chains came first, though, before advances in rubber technology made belts possible, and it wasn’t until the mid-1960s when Pontiac brought timing belts to mainstream vehicles. Differences Between Timing Belts and Timing ChainsĪs you might guess, timing belts are closed belts, often made of reinforced rubber, and timing chains are metal chains. From that point on, the cycle continues in the same way.Īdditionally, pulleys and tensioners are crucial to an engine’s timing system, since the parts are designed to keep the belt or chain from slipping and, in some cases, to drive other accessories such as the water pump. Afterward, only the exhaust valves open, so the leftover waste gases can be expelled. The intake valves then close, sealing the cylinders during compression and combustion. During the first step in an engine’s cycle, the intake valves are open so fuel and air can enter the cylinders, while the exhaust valves are closed so that the mixture can’t escape. Engine Valves Let Gas and Air Into the Engine, and Exhaust OutĮngine valves (each motor has at least two per cylinder) play a large role in the engine’s operation. The process follows the same principles as pedaling a bike, with the pedals being the crankshaft and the rear wheel being the camshaft the timing chain or timing belt is the bike chain in this example. The camshaft makes one revolution for every two revolutions of the crankshaft, and as it turns, small oval lobes on the shaft, or cams, push against the valves to open them. Timing belts and timing chains connect the engine’s crankshaft to the camshaft, which opens up the valves of the engine. Timing Chains and Belts Turn the Camshaft and Open the Engine Valves What Do Car Timing Belts and Timing Chains Do? We’ll explore what these car parts do, how they differ, and how much they cost. However, timing chains and timing belts are made of different materials (metal and rubber, respectively), installed in different ways, and have different maintenance costs (the most important characteristic for car owners). The valves let fuel and air into the engine, and exhaust out. Timing belts and timing chains do the same thing: They connect the engine’s crankshaft to the camshaft, which opens up the valves of the engine. Why It’s Important and How to Tell Which One Your Car Has
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |