LEMON Manuals: Even more car manuals for everyone
Home >> BMW >> 2015 >> M5 Standard Trans >> Repair and Diagnosis (Single Page) >> General Information >> OEM General Information >> Functional Description - F10 - Charging System, Anti-Theft System, Body Electrical System >> Body Electrical System - Functional Description >> Preheating system N47TU, N57TU >> Ceramic glow plugs

Ceramic glow plugs

The ceramic glow plugs are designed for a voltage of 7.0 Volts in calm air. During preheating, an effective on-board supply voltage of 10 Volts can be briefly applied for rapid heating. To maintain the heater plug temperature, the heater plugs are supplied with a PWM signal. This sets an effective voltage at the heater plugs that is lower than the on-board supply voltage.

Fig 1: Overview Of Ceramic Glow Element
G09910120Courtesy of BMW OF NORTH AMERICA, INC.
1 Ceramic heating element
2 Positive terminal connection
3 Connection bolt
4 Gasket
5 Circular connector
6 Thread
7 Support tube