A water collecting cup heater for diesel engine

Abstract

The present invention relates to a water collecting cup heater for a diesel engine. The integrated heat dissipation structure is adopted, and the heat dissipation structure is integrally formed by die-casting aluminum. The die-casting aluminum is fixed on the shell by hot riveting, and the contact area between the heat sink and the heat sink is large, which improves the heat dissipation effect; the internal circuit is connected by PCB, which can realize automatic soldering and improve the Production efficiency, reduce the risk of virtual welding, and improve product quality; the pin adopts a groove structure, which effectively solves the problem of product sealing; two temperature sensors are set up to make full use of the different characteristics of the two temperature sensors. The temperature of the NTC thermistor is The sensor has high sensitivity but large temperature changes and is easily disturbed; while the platinum RTD has a slow response speed, but the temperature changes are stable and it is not easy to jump. The temperature is sufficient, on the other hand, it can avoid the problem of the lifespan of the heater caused by the multiple switching of the heater caused by the temperature jump of the high-sensitivity sensor.

Description

technical field [0001] The invention relates to the technical field of diesel engines, in particular to a water collection cup heater for diesel engines. Background technique [0002] The fuel of the diesel engine is diesel. When the ambient temperature of the diesel is lower than 5°C, the fluidity of the diesel will become poor, resulting in a decrease in the spray quality, difficulty in starting the diesel engine, and increased smoke emissions, reducing the working life of the engine. Therefore, a diesel heating component is required to heat the diesel at low temperature. At present, diesel heating components are assembled with multiple structures, which leads to low assembly efficiency and poor structural stability; the assembly of multiple structures leads to a decrease in heat conduction efficiency and increases fuel consumption; and the existing structure is poor in sealing and cannot meet performance requirements . [0003] In the prior art, the application number C...

AI Technical Summary

Problems solved by technology

At present, diesel heating components are assembled with multiple structures, which leads to low assembly efficiency and poor structural stability; the assembly of multiple structures leads to a decrease in heat conduction efficiency and increases fuel consumption; and the existing structure is poor in sealing and cannot meet performance requirements

[0003] In the prior art, the application number CN2019210823978 discloses a water collecting cup heater. The heat of the first heating body is transferred from the side to heat the fuel in the fuel filter to ensure the fluidity of the fuel; The bottom of the water cup is heated, so that the bottom of the water collection cup is completely heated, and the ice and paraffin are quickly melted to avoid the formation of a frozen layer in the water collection cup and the drainage function cannot be realized.

The combined area of ​​the heater and the radiator is small and the conduction effect of the assembled heat sink is not good

In addition, there is not enough sealing structure at the cable connection

[0004] In addition, application numbers CN2018216164166, CN2018216164166, CN2011202486232, CN201120278145X, etc. all disclose the structure of some water collection cup heaters, but none of the above-mentioned prior art has further improved the control mode of the heater; The method generally only sets a temperature threshold or a temperature range threshold to control the heater for heating, but due to the problem of too high or too low sensor sensitivity, the temperature will delay or jump, resulting in frequent opening and closing of the heater, which affects other life

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