Imagine you are an automotive engineer for Toyoto Motor Corporation. You are test driving a new...

Imagine you are an automotive engineer for Toyoto Motor Corporation. You are test driving a new cruise control system, and you are driving around the test track at 55 miles per hour. You set the cruise control to 57miles per hour. The cruise controller takes over and speeds up to 59 miles per hour, then slows to 56 miles per hour, and finally settles at 58 miles per hour. Given this result, what adjustments would you make to the car's cruise control system to improve overall performance?

Expert Solution

Cruise controller adjusts & maintains the vehicle speed as desired. This speed adjustment is done by various speed sensors, RPM sensors, RADAR & cameras etc.

In above case, driver has set speed limit 57 MPH & he is riding the vehicle at 55 MPH. In cruise controller over take speed is 59 MPH after overtake vehicles slowdowns to 56 MPH & finally adjusts 58 MPH.

On continuous variation of car speed will lead to reduction in engine performance.

So need to inspect following adjustments in cruise controls.

Check the condition of cruise control cables for its damage, damaged cables lead to signal loss
Check the tightness & looseness of cable. Loose & tight cable may lead to variation in speed during desired adjustments
Check the tightness of lock nut & accelerator cables
Engine ignition system proper functioning
Check the proper synchronization of cruise control cables with accelerator & throttle lever
Set Car AC system properly

Also Incorporation of Adaptive cruise control system (ACCS), where engine speed is controlled based on traffic & speeds of the side by vehicles. This system designed with forward accidents & collision warnings,

Initially driver sets the maximum speed of car later he can adjust up down speeds manually based on practical conditions.

Working of cruise control also depends on following...

Maintain cars/vehicle tyre pressure properly
Maintain battery & cables condition properly. Damaged or loosely connected battery cables troubles the working of CCS.
Maintain engine servicing as per manufacturer guide
Maintain optimum load in vehicle
Avoid heavy or jerk braking
Don’t drive vehicle by putting foot on brake
Road condition: Select smooth roads

samet mamat answered 5 months ago

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