P*******7
发帖数: 304 | 1 请问什么是DRIVE CYCLE,有什么作用呢？ | I**F
发帖数: 114 | 2 Since the middle of 90's, all new cars in USA were required to have an in-
situ emission testing system, called On-Board Diagnostics (OBD) system. The
OBD system contains many monitors/sensors located from gas tank to engine
to muffler. It continually collects data on your car's everyday
operation to determine every second whether the car has an emission problem, and saves the data in the car's computer memory.
Once your car gets an emission problem, the OBD system will record a Diagnostic Tro |
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