Rapid start preheating device of hybrid electric vehicle and control method thereof

Abstract

The invention discloses a rapid start preheating device of a hybrid electric vehicle and a control method thereof. The rapid start preheating device comprises a heating chamber. A ventilation device is arranged on the outer side of the heating chamber, heating plates and heat exchange water pipes are arranged inside the heating chamber and connected with the heating chamber through a current controller and a flow controller respectively, and temperature sensors are arranged on water inlets and water outlets of the heat exchange water pipes and the heating plates respectively and connected with the current controller and the flow controller to control the magnitude of current and the quantity of heat exchange fluid and also can control on-off of the current. By the arrangement of the controllers, the rapid start preheating device has the advantages that the magnitude of the current, the quantity of the heat exchange fluid and on-off of the current can be controlled, the temperature rise and heat transfer speed is high, the heat loss is small, the heat energy conversion rate is high, and the energy consumption is lowered.

Description

technical field [0001] The invention relates to the technical field of preheating of a hybrid electric vehicle, in particular to a quick start preheating device and a control method for a hybrid electric vehicle. Background technique [0002] In winter in the northern and western plateau areas, the ambient temperature is very low, which has a great impact on engine starting. In order to make the engine start quickly under low temperature conditions at different temperatures, it is necessary to install an auxiliary device to improve starting to promote full use of fuel and reduce starting resistance. As a universal heater, the fuel heater is as a general-purpose heater, such as the Chinese invention patent application 201410625694.8 introduces a low-temperature starting device for an automobile engine. By restricting the cold air, it provides a device that facilitates the low-temperature starting of the engine. However, due to the low temperature in winter, the viscosity of t...

AI Technical Summary

Problems solved by technology

In order to make the engine start quickly under low temperature conditions at different temperatures, it is necessary to install an auxiliary device to improve starting to promote full use of fuel and reduce starting resistance. As a universal heater, the fuel heater is as a general-purpose heater, such as the Chinese invention patent application 201410625694.8 introduces a low-temperature starting device for an automobile engine. By restricting the cold air, it provides a device that facilitates the low-temperature starting of the engine. However, due to the low temperature in winter, the viscosity of the fuel increases, the starting resistance torque increases, and the ignition speed is slow. The problem of long thermal energy conversion time, so changing the preheating energy at low temperature can help improve heating efficiency, but now the heating energy in the process of common use has not changed with the change of the external environment temperature, and the disconnection and conduction cannot Timely control results in waste of energy. At the same time, the heat exchange efficiency is low, and the excessive heat loss is also an inevitable problem in the low-temperature start-up heating process.

Images