2020
Automotive/Transportation
This muffler is basically a combination of absorptive and reflective type and has 3 layers.
The inner one content a converging and diverging type of venturi with holes on it and a flap (can be a rhodium/palladium) in between the C/D venturi which diverts the exhaust gases.
Elevators are a critical element of "last mile" transportation infrastructure in high population density environments whose carrying capacity is severely constrained by recent social distancing recommendations.
PROBLEM:
Salt and other chemicals rust undercarriage components. Car-bottom rust is dangerous and expensive.
The undercarriage is vulnerable to damage due to lack of care. Salt and mud damage is a safety issue -- many undercarriage components cannot be rustproofed.
The Global Status Report on Road released by WHO suggests that a staggering 1.35 million road accidents happen worldwide annually. This has forced the governments worldwide to adopt legislation that make it mandatory to have a few ADAS applications in automobiles in order to improve road safety.
Every day, almost 30 people in the United States die in drunk-driving crashes—that's one person every 48 minutes in 2017. These deaths have fallen by a third in the last three decades; however, drunk-driving crashes claim more than 10,000 lives per year.
Well-known universal machine tool uses the non-accelerating propulsion design today. Excessive energy is never added to motor. The shift gearbox only provides needed torques /speeds by using the motor shaft standard highest torque and standard- idle speed.
Heavy vehicles generate high noise levels that are increasingly put under control limits. Prominent noise generating sites from (a) to (i) in the Figure are the exhaust, tyre tread, air inlet, upper engine belts an drives, base engine, transmission, auxiliary gearboxes, rear axle and air turbulence from the cabin.
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