A Review on the Impact of Bio-Additives on Tribological Behavior of Diesel Fuels

Figure 9

(a) Pin-on-disk tribometer, (b) four-ball wear tester, (c) high-frequency reciprocating wear rig, (d) pin-on-ring tribometer [66], (e) ball-on-cylinder (BOCLE) lubricity tests, and (f) scuffing load ball-on-cylinder (SLBOCLE).

(a)

(b)

(c)

(d)

(e)

(f)