To use diesel engines in winter, in order to save oil and reduce energy consumption, a preheating device may be installed on the diesel engine to preheat the exhaust pipe, increase the temperature of the diesel fuel, and reduce the viscosity of the diesel fuel. After the pre-heated diesel enters the diesel pump, the atomization effect is good, the combustion is sufficient, and the fuel consumption is significantly reduced. Specific methods are the following two: First, single tube pre-temperature. Two 11 mm holes were drilled at both ends of the exhaust manifold of the diesel engine to pass the preheating pipe from the exhaust manifold. The pipe joint screws were welded at both ends of the pipe, and one end of the pipe was connected to the outlet pipe of the diesel fine filter. Single-tube preheating can generally increase the oil temperature to 56-75°C and reduce fuel consumption by 5-6%. Second, double tube pre-temperature. Each end of the exhaust pipe of the diesel engine is drilled with a hole of 17 mm in diameter, and a 500-mm-long iron pipe is passed through. The iron pipe and the exhaust pipe are welded firmly, and the pre-temperature pipe is inserted into the iron pipe. The tubing connector screws are welded at both ends of the tubing, one end of the fuel oil filter of the oil filter, and the other end of the fuel pump inlet tube. With double tube preheating, the diesel temperature can generally be increased to 65°C and the fuel consumption can be reduced by 6-10%. It is worth noting that the optimal temperature for diesel pre-heating is 65-75°C, and the low-temperature fuel-saving effect is poor. Excessive temperatures will increase wear. Therefore, when installing a diesel engine preheating device, be sure to pay attention to the appropriate temperature requirements.
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