Ford-Cosworth EC / ED engine

The EC and ED family are a series of 3-litre and 3.5-litre, naturally-aspirated, V8, Formula One racing engines, designed, developed and produced by Cosworth, in partnership Ford; and used between 1994 and 1997. The customer engines were used by Benetton, Sauber, Forti, Lola, Simtek, Pacific, Minardi, and Tyrrell.[1][2]

Ford-Cosworth EC/ED
Overview
Manufacturer Ford-Cosworth
Production1994–1997
Layout
Configuration75° V8
Displacement3.0–3.5 L (183–214 cu in)
Cylinder bore94–100 mm (3.7–3.9 in)
Piston stroke53.9–55.7 mm (2.1–2.2 in)
Valvetrain32-valve, DOHC, four-valves per cylinder
Combustion
TurbochargerNo
Fuel systemDirect fuel injection
Oil systemDry sump
Output
Power output580–740 hp (433–552 kW)
Torque outputapprox. 230–325 lb⋅ft (312–441 N⋅m)
Chronology
PredecessorFord-Cosworth HB engine
Not to be confused with Ford Zetec engine.

Background

The HB was developed into 3,498 cc (213.5 cu in) (100 mm x 55.7 mm) EC V8 for the 1994 season. This engine, producing about 740 bhp @ 14,500rpm, was badged as Ford Zetec-R, and Michael Schumacher won the Drivers' World Championship with Benetton (his first of a record 7 championships), in 1994. This was the last Ford-powered F1 title.[3][4][5][6][7][8][9][10]

For the 1995 season, the F1 engine regulation changed to 3 litres, and the EC's bore and stroke were changed to 94mm x 53.9mm, resulting in 2,992 cc (182.6 cu in) ECA, which was introduced at about 600 bhp, and developed to 610 to 630 bhp at 14,000rpm. It was exclusively used by the Sauber team, whose biggest success of the year was Heinz-Harald Frentzen's third place at Monza.[11]

Customer unit Cosworth ED (not badged as Ford Zetec-R) for non-works teams was also made for 1995 with about 580 bhp for Minardi, Simtek (called the EDB), Pacific Racing (EDC) and Forti (EDD) teams. Minardi realised the power deficiency before the season and asked Magneti Marelli to develop a replacement engine management system, with which the engine was called the EDM.[12] Cosworth later updated the ED to ED 2/4 for Tyrrell and Lola with 2,995 cc (182.8 cu in) (94mm x 53.95mm) displacement for 600 bhp, which was used until the end of 1997 season.

References
  1. "Engine Ford Cosworth • STATS F1". www.statsf1.com. Retrieved 2021-10-09.
  2. "Cosworth story".
  3. https://www.snaplap.net/benetton-b194/
  4. http://www.classiccarweekly.net/tag/benetton/
  5. https://www.gtplanet.net/forum/threads/benetton-b194-ford-f1-5-michael-schumacher-1994.307964/
  6. https://rennwerk-gmbh.de/reference/benetton-b194-build-up/
  7. https://www.ultimatecarpage.com/spec/7096/Benetton-B194-Ford.html
  8. https://www.ultimatecarpage.com/car/7096/Benetton-B194-Ford.html
  9. https://f1chronicle.com/the-benetton-b194-schumachers-first-championship/
  10. https://www.goodwood.com/grr/event-coverage/festival-of-speed/2019/7/benetton-b194-05-the-car-that-took-schumacher-to-his-first-f1-title/
  11. "Engine Ford Cosworth • STATS F1".
  12. "Ford Cosworth ED specifications".
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