Research on Improvement of Truck Vibration Based on Systematic G8D Method

Table 3

“Yes and No” worksheet.

Problem-solving worksheet: does the truck have a vibration problem?
(1) Problem statement. The truck has longitudinal and vertical vibration in the cab at a speed of 65 km/h and 70 km/h in no-load condition
(2) Problem description		Yes	No	Access to information
Problem	1	The longitudinal and vertical vibration of a cab of vehicle	Steering wheel without vibration	Measurement result
	2	The rear of the frame bounces in a vertical direction	Shift lever without vibration	Measurement result
	3	The middle rear axle flutters along the vertical direction		Measurement result
Occurrence place	1	Cab		Test data
	2	Frame of a vehicle		Test data
	3	Middle rear axle		Test data
Occurrence time	1	New car
	2	Vibration at speed 65∼70 km/h	Other speed does not vibrate
Severity	1	In a severe state of discomforts	Other speed does not exist same situation	Live video recording