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Home › Posts tagged automotive

automotive

Automotive Troubleshooting Oil Loss Via the Piston Ring/the Valve Guides Inspection

Posted on July 8, 2013 by b1r2i3a4n5

Why the cause of white smoke can be determined by oil loss via the valve guides
(1) The negative pressure of the intake manifold is high when the engine is idle, so oil is sucked into the combustion chamber (more…)

Posted in Troubleshooting
Tagged with automotive, Guides, inspection, Oil Loss, Piston Ring, troubleshooting, valve

Automotive Fan Noise

Posted on December 21, 2012 by b1r2i3a4n5

Fan noise produced by the cooling fans for the radiator, alternator, and others, become louder in proportion to their rpm.
The fan noise can be produced by fan blades cutting through the air, or by air (more…)

Posted in Vibration And Noise
Tagged with automotive, Fan, Noise

Source of Automotive vibration Generation

Posted on December 21, 2012 by b1r2i3a4n5

As typical examples of vibrating force in a vehicle, there are the following: combustion pressure or torque fluctuation in the engine, unbalanced tires, rough road, imbalance or joint angle in the propeller (more…)

Posted in Vibration And Noise
Tagged with automotive, Generation, Source, Vibration

Automotive Resonating System

Posted on December 21, 2012 by b1r2i3a4n5

If vibrating force is applied to the spring and weight as shown in the figure, vibration rapidly becomes large when the frequency of the applied force reaches a certain frequency level. This phenomenon (more…)

Posted in Vibration And Noise
Tagged with automotive, Resonating, System

Automotive Vibration and Sound

Posted on December 21, 2012 by b1r2i3a4n5

When driving on a highway, if the steering wheel or the body vibrates or an unpleasant booming noise is heard from some unknown place, the driver would feel anxious not only about the discomfort but also (more…)

Posted in Vibration And Noise
Tagged with automotive, sound, Vibration

Automotive Air Condition System Performance Test

Posted on January 11, 2012 by b1r2i3a4n5

1.Description
For cooling performance of the A/C, measure the difference of temperature between the inlet port and outlet port of the air, and judge whether the value is within the standard range in the (more…)

Posted in Heater and Aircondition System
Tagged with Air Condition, automotive, Performance, System, Test

Automotive Air Condition System Inspection with Manifold Gauge

Posted on January 10, 2012 by b1r2i3a4n5

1.Normal
If the refrigeration cycle is normal, the gauge pressure values are as shown.
Low-pressure side
0.15 to 0.25 MPa (1.5 to 2.5 kgf/cm

Posted in Heater and Aircondition System
Tagged with Air Condition, automotive, Gauge, inspection, Manifold, System

Diagnosis of Malfunction in Automotive Refrigeration Cycle

Posted on January 9, 2012 by b1r2i3a4n5

1.Importance of checking pressure
Checking the refrigerant pressure while the air conditioning is functioning allows you to assume the trouble area or the cause. Therefore, it is important to confirm (more…)

Posted in Heater and Aircondition System
Tagged with automotive, Cycle, Diagnosis, Malfunction, Refrigeration

Automotive Air Condition System Visual and Aural Check

Posted on January 8, 2012 by b1r2i3a4n5

1.Is the drive belt loose?
If the drive belt is too loose, it will slip; this will cause it to wear out.
2.Amount of air blow is insufficient
Check for dirt and clog in the clean air filter.
3.Noise (more…)

Posted in Heater and Aircondition System
Tagged with Air Condition, Aural, automotive, Check, System, Visual

Automotive Air Condition System Inspection/Test

Posted on January 7, 2012 by b1r2i3a4n5

Notes for Maintenance of Air Conditioning System

1.When handling refrigerant the following precautions must be observed
Do not handle refrigerant in an enclosed area or near an open flame.
Always (more…)

Posted in Heater and Aircondition System
Tagged with Air Condition, automotive, inspection, System, Test

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