The cargo truck, as an important means of transportation for goods transportation, its engine performance is directly related to the efficiency of transportation and traffic safety. However, engine noise has always been a headache for cargo truck owners.This article will revolve around the theme of “engine noise of cargo trucks” and reveal the reasons behind the noise and the solutions.
I. Common causes of engine noise in cargo trucks
1. Mechanical faults
Wear, looseness or damage of mechanical parts in the engine, such as bearings, crankshaft, connecting rods, etc., may cause noise.In addition, carbon deposits on engine parts can also cause noise.
2. Failure of lubrication system
Insufficient lubrication or poor lubricating oil quality may cause increased friction between engine parts, resulting in noise.
3.Failure of valve mechanism
Excessive valve clearance, fatigue of valve springs, wear of valve stems and valve seats, etc., may cause abnormal operation of the valve mechanism and generate noise.
4. Failure of cooling system
Overheating of engine parts can cause expansion and contraction, thereby causing noise.
In addition, failure of cooling system components such as water pumps and fans may also cause noise.
5. Failure of intake and exhaust system
Blockage, damage or looseness of intake and exhaust pipes, three-way catalytic converters, etc., can cause poor airflow and generate noise.
II. Diagnosis and solution methods for engine noise in cargo trucks
1. Diagnosis methods
(1) Listen to the noise: Listening to the noise location and timing during engine operation can help determine the source of the noise.
(2) Check for foreign objects: Check the engine compartment internally and externally to see if any foreign objects have entered the engine compartment.
(3) Check engine parts: Check the wear, looseness and damage of engine parts.
(4) Use diagnostic instruments: Use professional diagnostic instruments to detect the operating data of the engine and analyze the cause of the noise.
2. Solution methods
(1) Replacement of parts: For worn, loose or damaged parts, they should be replaced in a timely manner.
(2) Adjusting valve clearance: Regularly check and adjust the valve clearance to ensure the valve mechanism operates normally.
(3) Changing lubricating oil: Regularly change high-quality lubricating oil to ensure smooth operation of engine components.
(4) Cleaning the cooling system: Clean the engine cooling system to ensure unobstructed water flow.
(5) Checking intake and exhaust systems: Check the intake and exhaust system pipes, three-way catalytic converters, etc. and repair or replace damaged or blocked parts in a timely manner.
Summary: Engine noise in cargo trucks is a complex issue that involves multiple aspects. Only by carefully diagnosing and analyzing can the root cause of the noise be found. At the same time, regular maintenance and inspection of the engine is an effective means of preventing noise. Hopefully, this article can provide some useful references for cargo truck owners to help resolve the problem of engine noise.
