Application of PTC ceramic heater in automobile

The PTC positive temperature coefficient heating element has the advantages of no open flame, fast heating, self-controlled constant temperature, long life, etc. The constant temperature electric soldering iron is its typical application. This article describes the application of PTC heating elements for low temperature start-up in automotive oil circuits.

The PTC ceramic heater used for low-temperature start-up of automobiles has three types of structures: branch-type flat disc and ring type. The common feature is high thermal efficiency, small volume, simple structure, and can be directly fixed on the wall of the gasification chamber to heat the gasification chamber, so that the temperature thereof is rapidly increased, thereby improving the gasification efficiency of the fuel. This is beneficial to the start of the car at low temperatures, as well as reducing exhaust pollution and reducing fuel consumption. Because of its self-controlled constant temperature heating characteristics, PTC thermistors are ideal for automotive applications where the working environment is constantly changing.

The performance parameters of the PTC ceramic heater for low temperature start are as follows:

Normal temperature resistance: 0.25 ~ 0.5 Ω;

Rated working voltage: DC10~25V;

Static constant temperature: 160 ° C ± 5%;

Power: 350W;

Start preheating time: <180s (ambient temperature 0~40°C)

Working environment temperature: -40 ~ 300 °C.