What are the advantages of an integrated exhaust manifold in the cylinder head?
1 Answers
The advantage of an integrated exhaust manifold is that it can raise the coolant temperature more quickly, significantly increasing engine speed during cold starts, allowing the engine to reach efficient operating conditions faster and reducing wear on internal components during cold starts. An integrated exhaust manifold is built into the cylinder head. This design helps reduce turbo lag and improves engine efficiency. The integrated exhaust manifold is a future trend in engine development, and many automakers are adopting this design. The earliest engine to use this design was likely Volkswagen's third-generation EA888 engine, which boasts high efficiency, strong power output, and excellent fuel economy. Functions of the integrated exhaust manifold: Shortens warm-up time—When the exhaust manifold is integrated into the cylinder head, the high temperature of the exhaust manifold during cold starts can quickly heat the coolant, significantly reducing warm-up time. Reduces engine weight and lowers the vehicle's center of gravity—Integrating the exhaust manifold into the cylinder head can reduce the engine's weight by approximately 3000 to 5000 grams, thereby lowering the vehicle's overall center of gravity. Enhances power in turbocharged engines—During high engine loads, the coolant can also help cool the exhaust gases. Reduces turbo lag—With the exhaust manifold integrated, the length of the exhaust piping is significantly shortened, allowing exhaust gases to reach the turbocharger faster.
