Method for heating cooling fluid so as to realize start-up preheating and heating system

Abstract

The invention discloses a method used for heating a cooling fluid so as to realize start-up preheating. The method comprises the following steps: a step 1, providing the cooling fluid, wherein the cooling fluid is filled in a circulating pipe; a step 2, providing fuel oil and igniting the fuel oil so as to heat the cooling fluid in the circulating pipe; a step 3, connecting the circulating pipe to an engine, enabling the cooling fluid to circularly flow in the circulating pip, and continuing to heat the engine; a step 4, collecting the waste gas generated by fuel oil combustion, and introducing the waste gas to the bottom of the engine so as to heat the engine; and a step 5, judging the temperature of the engine, and when the temperature of the engine achieves a threshold, stopping burning the fuel oil. The method provided by the invention has the advantages of low-temperature startup and high-temperature stop functions and high security.

Description

technical field [0001] The invention relates to a fuel preheating method and a preheating system, in particular to a method and a heating system for starting preheating by heating coolant. Background technique [0002] The fuel of the excavator needs to be preheated. This is to solve the problem that the diesel (engine oil) cannot be ignited when the excavator is started, especially in northern China. This is a common phenomenon. [0003] In the past, the common excavator fuel preheating system used resistance wire to heat the intake air, and heated the diesel and engine oil through hot air flow to ensure the normal start of the excavator. However, in some northern cold regions, the temperature even reaches minus 30°C. Heating the intake air can no longer guarantee the normal start of the excavator, which leads to the failure of the excavator to work normally, which brings great troubles to customers and service engineers. [0004] In the prior art, some merchants have prov...

AI Technical Summary

Problems solved by technology

For example, the Chinese utility model patent with the application number CN200720039751 discloses a preheating device using a combination of relays, reset switches and fuses. However, due to the large number of electronic control devices on the excavator, the safety of many preheating systems cannot meet the requirements. Once a fire breaks out, the consequences will be serious

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