Throttle Cable Failure Performance

The failure modes of the throttle cable mainly include card issuance, fracture, abrasion and breakage. Card issuance and breakage account for a large proportion of the failure rate of the throttle cable.

① The throttle cable is too long and the radius of curvature of the throttle cable is too small (QC/T29101-1992 "Automobile Control Cable Assembly" standard stipulates that the minimum working radius of curvature is 200mm when the outer diameter of the sheath is ≥8mm), and the turning is too much , The cable is not pulled smoothly, and the card is issued;

② The wire rope grease of the throttle cable is dry, and the wire rope pulling resistance is large;

③ The tightness of the dust cover of the throttle cable is poor. Dust, sand, etc. are brought into the protective tube and hinder the normal pulling of the steel cable. The main reasons for the failure of the throttle cable wear and tear are improper setting of the throttle cable fixed point, lack of a fixed point, or the fixed point falls off, and the throttle cable is caused by friction with other parts. The fracture failure of the throttle cable is mainly related to the installation method of the throttle cable. Generally, it fractures after bending fatigue. If it is due to structural factors, when the accelerator pedal is far away from the engine throttle control handle, the throttle cable is longer. When arranging the throttle cable, try to avoid excessive bending or too small bending radius; it needs to be in an appropriate position during assembly. Add fixed points.