Audi diesel straight-4 1.9 L AFN 109 HP engine DIY maintenance and service manual

General Information

Audi diesel straight-4 1.9 L AFN 109 HP is an 1896 cc (1.67 UK qt.) internal combustion reciprocating Inline 4 engine. It has bore/stroke ratio of 79.5 mm × 95.5 mm (3.13 in × 3.76 in). This engine was rated 81 kW (108.62 hp). It was used in Audi cars.

Engine Performance Rating

SAE J1349 (SAE Net)

Audi diesel straight-4 1.9 L AFN 109 HP engine performance rating according to SAE J1349 (SAE Net) standard.
Parameter	Output
Power Rating	81 kW (108.62 hp)

Specifications

General

Audi diesel straight-4 1.9 L AFN 109 HP engine general specifications.
Parameter	Value
Type	Internal Combustion Reciprocating
Fuel Type	Diesel
Cylinder Configuration	Inline 4
Engine Displacement	115.7 in³115.7 in³1896 cc
Bore	3.13 in3.13 in79.5 mm
Stroke	3.76 in3.76 in95.5 mm

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Engine head and valvetrain

Audi diesel straight-4 1.9 L AFN 109 HP engine head and valvetrain specifications.
Parameter	Value
Valvetrain Type	SOHC
Valves per Cylinder	2

Air Intake

Audi diesel straight-4 1.9 L AFN 109 HP air intake specifications.
Parameter	Value
Air Intake Method	Turbocharger

Fuel Injection

Audi diesel straight-4 1.9 L AFN 109 HP fuel injection specifications.
Parameter	Value
Injection Type	GDI