Connecting rod bearing development caused by abnormal sound is what reason

Connecting rod bearing high temperature to do 1 fault occur abnormal noise by machine idle running noise is loud or when small, sharp acceleration are heavier and shortness of 'dangdang' obviously improved continuous tapping. This is a link to high temperature influence mainly through characteristics of bearing ring, serious when idle speed can hear some obviously abnormal noise. Connecting rod bearing linked to hot weather than the main high temperature bearing rings for joy, ease, urgent. High temperature 2 fault analysis of connecting rod bearing or journal wear and make the fit clearance is too large or bad. Low oil pressure, or oil, or connecting rod shaft oil duct obstruction, leading to poor smoothness. (3) temperature of connecting rod bearing cap is loose or disconnected. (4) this high temperature bearing structure size requirements, provoked the rotation or rupture. Running high temperature bearing rod (5) save gold scattering or burned. 3 fault diagnosis (1) changes in China machine speed, sound less affected when idle speed, medium speed is more obvious, a steady increase the chiming of the electronic throttle is continuous, and throttle when tapping increases continuously, high speed is not obvious because of other noise interference. 剧透,悲剧剧。 When the engine temperature change, the voice is usually constant, but sometimes also affected by the lubricating oil temperature. (4) the single cylinder break fire, sound significantly reduced or disappeared, but in the sound is a fire in the cylinder can be immediately. However, when the connecting rod bearing loose kuang has very high temperature, fire in single cylinder sound did not change significantly. (5) the ignition, hair ring 2 times, namely each work cycle ring twice. 6. High temperature bearing rod side oil pan in large noise. Noise if use the stethoscope to touch on the body, not very clear, but the oil inlet or crankcase ventilation tube mouth direct to listen, but can be heard clearly the connecting rod through the high temperature impact bearing tapping. 7) along with the phenomenon. This high temperature bearing with the phenomenon of oil pressure decrease, serious live body shaking, this is different from ring of piston pin, piston cylinder. Use a screwdriver or stethoscope can hand the lower cylinder body or the oil pan, defective cylinder in contact with the corresponding bits have obvious vibration. A: choose imported bearing next article 12 development necessary elements: none