Exhaust System Considerations for 1982 Heavy Duty Trucks 770893

The paper describes the exhaust system hardware that will be required for 1982 trucks to meet the 80 dBA Federal noise regulations.
First, a summary is presented of market trends and legislative limitations influencing future truck exhaust systems. From these limitations, exhaust system performance standards, well into the next decade, are projected.
Then with that foundation, it is predicted what actual exhaust system hardware for 1982 might “look like,” along with a review of the obstacles that must be overcome to attain the exceptional level of exhaust system performance that will be required.
The benefits of distributed systems in controlling exhaust noise and backpressure are described, plus information is presented on the effect of backpressure on fuel economy.


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