The Iveco S-Series automotive engine preheating system uses a timed fuel ramp that determines the warm-up timing based on outside temperature (engine coolant temperature). The temperature sensor transmits temperature information (resistance size) to the electric start control box. When the temperature is above 5*, the preheating system does not work; when it is below 0 ft, the relay in the electric start control box is sucked, and the electric heating starter is energized and heated for 30 to 40 seconds (heating when the outside temperature is low) The time is longer, and vice versa.) When the preheating indicator light is off, the engine is started. At this time, the oil return solenoid valve is opened, and the diesel oil in the oil return pipe is ignited by the electric heating starter and then sucked into the cylinder, so that the engine is easy to start. The common faults and troubleshooting methods of the car preheating system are as follows: the preheating lamp is always on or the preheating time is too long. This kind of failure usually occurs in the summer or spring, Wu Xiuyi autumn festival, and it is easy to cause the engine to emit black smoke. This is because the oil return solenoid valve is normally opened after the engine is started, and the temperature is lowered by injecting oil to the electric heating starter for a long time. In this way, the air entering the engine contains diesel fuel, which forms black smoke because it cannot burn. When the preheating light is always on, the resistance of the temperature sensor becomes larger and does not change with temperature. Under normal circumstances, the resistance of the sensor in summer or spring and autumn should be around 1000~1500 Euro. When the preheating light is always on, the resistance is about 9000 ohms. The solution is to use a multimeter to measure the ground resistance of the 5577* line. If the resistance is about 9 000 ohms, replace the sensor. The preheating time is short or the preheating indicator light is shining. This kind of failure generally occurs in the winter, which is basically caused by the inactivity of the preheating system. At this time, the black smoke is emitted after the engine is started. The reason is that the control box does not work and cannot supply power to the electric starter to warm it up. The solution is to replace the sensor or the control box when there is no problem with the external circuit. Second, when the replacement sensor or the control box cannot be solved, try the resistor series method, that is, use an adjustable resistor of 1~20,000 ohms. The device is connected in series between 5577 lines. When the resistance is repeatedly adjusted, the ignition switch is turned on repeatedly until the preheating indicator is normal. Then use a multimeter to measure the resistance of the adjustable resistor at this time, and replace the resistor with the same resistance (regardless of the power of the resistor). If the series method still can't solve the problem, it can also be solved by parallel resistors, that is, using a resistance of about 1000 ohms, the control box 5577 line is connected in parallel with the brown ground line. This method can also solve some problems. The engine is seriously smoky. This is a special malfunction caused by the seizure of the solenoid valve. In case of such a fault, check whether the electric heating starter sprays diesel oil. If the fuel injection is normal, the solenoid valve can be confirmed to be stuck. The solenoid valve should be cleaned or replaced. â–¡ Heavy duty; 1Pop shed 02 when the replacement * Gaofeijiang Honghui heavy-duty vehicle generally runs for a long time. The load is large, the roads are complicated, and the work site is dusty. This kind of harsh working conditions makes the aging of heavy-duty engine oils faster than ordinary truck engines. Therefore, heavy-duty engine oil should be replaced in time according to regulations, avoiding the waste of lubricating oil due to premature replacement, and preventing poor lubrication due to too late replacement, resulting in pulling cylinders, burning tiles, and the like. For a long time, the heavy-duty engine oil of the military has mainly adopted the regular replacement method, that is, forcibly changing the oil according to the mileage of the vehicle recommended by the manufacturer or the engine working hours. The cycle is mainly determined according to the general operating conditions of the car, and the specific operating environment is less considered. However, for heavy-duty vehicles that operate under complex conditions for a long period of time, changes in engine lubricant quality are closely related to roads, environment, weather, and other conditions of use, and the replacement cycle should be determined on a case-by-case basis. So, how to determine the timing of replacement of heavy-duty engine oil, the following two methods are available. The first is to use a combination of recommended mileage and on-site monitoring. That is, based on the oil change period recommended by the manufacturer, combined with the specific use conditions, when the oil change period is 70%~80%, the quality of the lubricating oil is monitored, and then the oil change time is determined according to the monitoring result. In addition to ensuring the normal lubrication of the engine and avoiding the waste of lubricating oil, this method can also understand the technical condition and wear degree of the engine from the change of the quality of the lubricating oil, and has a guiding role for properly maintaining the engine and promptly eliminating the hidden trouble of the engine. The second is to regularly monitor the quality of lubricants for heavy-duty engines. By measuring the lubricating oil droplet marks, viscosity, flash point and moisture, insoluble matter content, iron content and other performance parameters, determine the quality of the quality, and determine the replacement time accordingly. The drip marks on the lubricating oil can roughly reflect the clean dispersion performance of the lubricating oil. The change in viscosity (kinematic viscosity) indicates the extent to which the lubricating oil is oxidized, diluted, and contaminated. The change in flash point reflects the extent to which the lubricant is diluted by the fuel. The more fuel is mixed in the lubricant, the greater the flash point drops. The more moisture content in the lubricating oil, the stronger the corrosive effect on the metal surface. The content of insoluble matter can indicate the degree of contamination of the lubricating oil by oxides, carbon particles, external impurities and the like. The amount of iron in the lubricating oil shows the wear resistance of the lubricating oil and the wear of the engine components. At present, a vehicle engine lubricating oil is generally added with a clean dispersing additive, which can dissolve and suspend the oxides and carbonaceous particles generated during the use of the engine lubricating oil in the lubricating oil, and disperse in the lubricating oil. Under the action of the additive, the lubricating oil will gradually turn black, which is normal. â–¡
CLUTCH DISC
The clutch disc (driven plate/clutch
plate) engine torque can be cut off and transmitted by engaging or disengaging
from the flywheel.
Clutch discs adjust the vibration and noise of a car, thereby
providing the most comfortable ride according to the car`s overall
characteristics. The most prominent feature of clutch is the torsion
phenomenon that reduces the unpleasant noise and vibration generated by
changing revolution speed.
SYC Clutch disc`s characteristic:
1. Retaining plate
uses colourful process
2. High quality
springs
3. W ear resistant and high-temperature
resistant clutch facing.
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