gf1520l3101va

Glow plugs position/task/design/function

Type gf · thema 15.20 · versie 0100 · 2003-03-13

Geldig voor: ENGINE 668.914 in MODEL 414.700

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Functiegroep 1 Motor › 15 Elektrische installatie van de motor › 15.20 Voorgloeisysteem — Serie 414 (modellen 700) · Serie 668 (modellen 914)

GF15.20-L-3101VA

Glow plugs position/task/design/function

29.8.00

ENGINE 668.914 in MODEL 414.700

Glow plugs position/task/design/function

L15.20-0004-05

R9 Glow plug

a Control winding

b Heating winding

c Plug connection

	Glow plugs position	The glow plugs (R9) are screwed into the cylinder head behind the exhaust manifold.
	Glow plugs task	The glow plugs pre-heat the combustion chamber in order to achieve the ignition temperature required for the fuel-air mixture.
	Glow plugs design	The glow plug (R9) consists of a housing with female thread and an interference-fit glow rod. The heating element is integrated in the glow rod. It consists of a heating winding (b) and a control winding (a) connected in series.
	Glow plugs function	When the preglow system is switched on, a current of about 30 amperes flows to each glow plug. The heating winding heats the glow plug. The control winding increases its resistance as the temperature rises and limits the current to approx. 15-25 ampere. The glow plug (R9) is protected in this way from excessive loads.