Engine low-temperature starting preheating and cab warm air system

Abstract

The invention relates to the technical field of automobile part structures, and specifically relates to an engine low-temperature starting preheating and cab warm air system. The engine low-temperature starting preheating and cab warm air system comprises an engine, a warm air device and a heater, wherein a three-way electromagnetic control valve is mounted at an outlet of the heater; the three-way electromagnetic control valve is of a valve structure which is provided with a water inlet and two water outlets and can be switched between the two water outlets according to the temperature; one water outlet of the three-way electromagnetic control valve communicates with a water pump water inlet of the engine through an engine water inlet pipe, and the other water outlet of the three-way electromagnetic control valve communicates with the warm air device through a warm air water inlet pipe; the warm air device communicates with the engine water inlet pipe through a warm air water outlet pipe; a water inlet of the heater communicates with a first water outlet of the engine through an engine water outlet pipe; and a temperature sensor is arranged at the water inlet of the heater. The engine low-temperature starting preheating and cab warm air system is simple in pipeline structure, convenient to operate, capable of dealing with the situations that the engine is started at a low temperature and the engine does not start and starts the warm air system independently, and high in heat exchange and heat energy utilization efficiency.

Description

technical field [0001] The invention relates to the technical field of auto parts structure, in particular to an engine low-temperature starting preheating and cab heating system. Background technique [0002] Liquid heaters are generally used in low-temperature starting, preheating, warm air heating, glass defrosting, etc. of automobiles and engineering machinery. The purpose of heating the engine block and heating the body heater. [0003] When the ambient temperature is between -35°C and -41°C, a liquid heater needs to be used to heat the coolant in the cylinder before starting the engine at low temperature. Usually, it needs to be heated for 20 minutes to make the coolant temperature rise above 30°C to meet the starting requirements. In general, the engine can only be heated by the warm air in the cabin after the engine is successfully started, and the coolant temperature of the engine rises slowly in a low-temperature environment. The heating system needs to wait for ...

AI Technical Summary

Problems solved by technology

Because the compartment heater is far away from the engine, the heat loss of the coolant after long-distance transportation is large, and the engine preheating effect is also poor, making it difficult to start the engine within the specified time.

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