Cosworth DFV

Cosworth DFV
Overview
Manufacturer	Ford-Cosworth
Designer	Keith Duckworth Mike Costin
Production	1967–1983
Layout
Configuration	V8, naturally-aspirated, 90° cylinder angle
Displacement	2,993 cc (182.64 cu in)
Cylinder bore	85.67 mm (3.37 in)
Piston stroke	64.9 mm (2.56 in)
Cylinder block material	Aluminium alloy
Cylinder head material	Aluminium alloy
Valvetrain	32-valve, DOHC, four-valves per cylinder
Combustion
Fuel system	Mechanical indirect fuel injection
Fuel type	Gasoline
Output
Power output	400–530 hp (298–395 kW)
Torque output	221–280 lb⋅ft (300–380 N⋅m)
Dimensions
Dry weight	168 kg (370.4 lb)
Chronology
Successor	Ford-Cosworth HB

1968 Ford P68

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1971 Tyrrell-Cosworth 002

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1978 Lotus-Cosworth 79

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The DFV is an internal combustion engine that was originally produced by Cosworth for Formula One motor racing. The name is an abbreviation of Double Four Valve, the engine being a V8 development of the earlier four-cylinder FVA, which had four valves per cylinder.^[1]

Its development in 1967 for Colin Chapman's Team Lotus was sponsored and funded by major American automotive manufacturer Ford. For many years it was the dominant engine in Formula One, with the whole engine program funded by Ford's European division, Ford Europe and engines badged as "Ford" for Formula One championship races. DFVs were widely available from the late 1960s to the mid 1980s and were used by every specialist team in F1 during this period with the exception of Ferrari, Alfa Romeo, Renault, BRM and Matra, who all designed, produced and ran their own engines. Variants of this engine were also used in other categories of racing, including CART, Formula 3000 and sports car racing.

The engine is a 90°, 2,993 cc V8 with a bore and stroke of 85.67 × 64.90 mm (3.373 × 2.555 in). It reliably produced over 400 bhp, specifically reaching 408 bhp at 9,000 rpm, and 270 ft⋅lbf (370 N⋅m) of torque at 7,000 rpm. By the end of its Formula 1 career, it achieved over 500 bhp, with a peak of 510 bhp at 11,200 rpm.

The 1983 DFY variant had an updated bore and stroke of 90.00 × 58.83 mm (3.543 × 2.316 in), maintaining a displacement of 2,993 cc. It produced 520–530 bhp at 11,000 rpm and 280 ft⋅lbf (380 N⋅m) of torque at 8,500 rpm.