Lancia V4 engine
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- 903 cc (55.1 cu in)
- 1,090 cc (67 cu in)
- 1,091 cc (66.6 cu in)
- 1,196 cc (73.0 cu in)
- 1,199 cc (73.2 cu in)
- 1,216 cc (74.2 cu in)
- 1,231 cc (75.1 cu in)
- 1,298 cc (79.2 cu in)
- 1,352 cc (82.5 cu in)
- 1,486 cc (90.7 cu in)
- 1,584 cc (96.7 cu in)
- 1,927 cc (117.6 cu in)
- 2,119 cc (129.3 cu in)
- 2,370 cc (145 cu in)
- 2,568 cc (156.7 cu in)
| Lancia V4 engine | |
|---|---|
 In Lancia's Fulvia model, the 1.3 litre V4 engine was mounted at a 45° angle. | |
| Overview | |
| Manufacturer | Lancia |
| Production | 1922-1976 |
| Layout | |
| Configuration | All V4s at: 10°, 11°, 13°, 20° |
| Displacement |
|
| Cylinder bore |
|
| Piston stroke |
|
| Cylinder head material | Aluminum |
| Valvetrain | SOHC or DOHC |
| Compression ratio | 9.0:1 |
| Combustion | |
| Fuel system | Carburetor |
| Fuel type | Gasoline |
| Oil system | Wet sump |
| Cooling system | Water-cooled |
| Output | |
| Power output | 28.8–132 PS (21–97 kW) |
| Chronology | |
| Successor | Lancia Flat-4 engine |
Italian automobile company Lancia was the first to manufacture cars with V4 and V6 engines in series-production. This started with a number of V4-engine families, that were produced from the 1920s through 1970s.
The Lancia V4 pioneered the narrow-angle V engine design, more recently seen in Volkswagen's VR5 and VR6 engines. By using very shallow V-angles — between 10° and 20° — both rows of cylinders could be housed in an engine block with a single cylinder head, like a straight engine. A determining characteristic was the use of overhead camshafts (either single or double), in which a camshaft would serve the same function for all cylinders — in both cylinder banks.
The first V4 was used in the Lambda from 1922 through 1931. It was a 20° narrow-angle aluminium design. All three engine displacements shared the same long 120 mm (4.72 in) stroke, and all were SOHC designs with a single camshaft serving both banks of cylinders.
Engines:
- 2.1 L (2,119 cc) 75 mm (2.95 in), 49 PS (36 kW; 48 hp) at 3250 rpm
- 2.4 L (2,370 cc) 79.37 mm (3.12 in), 59 PS (43 kW; 58 hp) at 3250 rpm
- 2.6 L (2,568 cc) 82.55 mm (3.25 in), 69 PS (51 kW; 68 hp) at 3500 rpm
Artena
The Lambda engine was updated for the Artena. Bore was set at 82.55 mm (3.25 in) as in the 2.6 L Lambda, but stroke was reduced to a more conventional 90 mm (3.54 in). Total displacement was 1.9 L (1,927 cc), with 55 PS (40 kW; 54 hp) produced at 4000 rpm.
Augusta
An all-new V4 was designed for the Augusta. Produced from 1934 through 1938, the Augusta's engine displaced 1.2 L (1,196 cc) with a 69.85 mm × 78 mm (2.75 in × 3.07 in) bore and stroke. Power output was 35 PS (26 kW; 35 hp) at 4000 rpm.
Aprilia
The engine was redesigned again for 1936's Aprilia. The first-series cars used a 1.4 L (1,352 cc) version with a 72 mm × 82 mm (2.83 in × 3.23 in) bore and stroke. Output was 47 PS (35 kW; 46 hp) at 4300 rpm.
A second series was unveiled for 1939 with an enlarged 1.5 L (1,486 cc) engine. It did not share its predecessor's dimensions, with bore and stroke now at 74.61 mm × 85 mm (2.94 in × 3.35 in). Power output was nearly the same at 48 PS (35 kW; 47 hp).
Ardea
A small V4 (tipo 100) powered the compact 1939 Ardea. It was a 20° narrow-angle engine displacing just 0.9 L (903 cc). Bore and stroke were new again at 65 mm × 68 mm (2.56 in × 2.68 in), and output was just 28.8 PS (21.2 kW; 28.4 hp) at 4600 rpm. For the 1949 tipo 100B power was increased to 30 PS (22 kW; 30 hp).
Appia
The V4 returned after the war with the 1953 Appia. It featured an even narrower 10° cylinder bank and just 1.1 L (1,090 cc) of displacement, fitting below Italy's 1.1-liter tax threshold. An initial 38 PS (28 kW; 37 hp) of power grew to 43 PS (32 kW; 42 hp) in 1956. 48 PS (35 kW; 47 hp) was available in 1959.
