Engines Renault EF-Type engine

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1 engines

1.1 ef1

1.1.1 1977-1979
1.1.2 1979-1983


1.2 ef4

1.2.1 1984
1.2.2 type-bis 1985


1.3 ef15

1.3.1 mid-1985
1.3.2 type-b 1986
1.3.3 type-c mid 1986







engines
ef1
1977-1979

based on 2-litre type chs engine , developing 510 bhp (380 kw; 517 ps) @ 11,000 rpm, engine underwent several major changes (metallurgy, mixed air-water exchanger) before bringing renault rs01 first points in 1978 , first pole position in 1979.



ef1: 1,492 cc bore 86.0 mm (3.4 in) stroke 42.8 mm (1.7 in) 7.0:1 compression, 1 garrett turbocharger.

1979-1983

with 2 small turbochargers, engine reduced turbo lag considerably. brought renault first f1 race win turbo engine (dijon 1979). undergo number of significant changes on years (electronic injection , two-flap air intake in 1982, water injection @ air intake in 1983) , horsepower gradually increase, reaching 700 bhp (522 kw; 710 ps). in all, claimed 15 race wins, 30 pole positions , 19 pole positions , saw both renault , alain prost finish second in constructors , drivers championships respectively. supplied lotus team in 1983.



ef1: 1,492 cc bore 86.0 mm (3.4 in) stroke 42.8 mm (1.7 in) 7.0:1 compression, 2 kkk turbochargers.

ef4
1984

this engine marked return of garrett turbochargers. fitted renault re50, lotus 95t , ligier js23, not break dominance of porsche built tag v6 engine powered mclaren mp4/2 12 wins out of 16 races. nevertheless notched 11 podium finishes , 3 pole positions , allowed lotus driver elio de angelis finish 1984 season in 3rd place. 1984 marked first year since 1978 renault engine did not win formula 1 race. 1984, renault turbo producing approximately 750 bhp (559 kw; 760 ps) in race trim , around 900 bhp (671 kw; 912 ps) qualifying.



ef4: 1,492 cc bore 86.0 mm (3.4 in) stroke 42.8 mm (1.7 in) 7.0:1 compression, 2 garrett turbochargers.

it last engine badged renault gordini , there new name promote: renault sport.


type-bis 1985

this engine s defining characteristics centralized electronic injection , ignition control systems. generating on 800 bhp (597 kw; 811 ps), powered renault re60, lotus 97t, ligier js25 , tyrrell 014. responsible 1 race win, 2 pole positions , 2 podium finishes.



ef4: 1,492 cc bore 86.0 mm (3.4 in) stroke 42.8 mm (1.7 in) 7.0:1 compression, 2 garrett turbochargers.

ef15
mid-1985

with greater fuel economy new dimensions , lower boost pressure, horsepower nevertheless oscillated between 800 bhp (597 kw; 811 ps) , 1,000 bhp (746 kw; 1,014 ps), metallurgical developments in turbochargers. earned 2 race wins , 5 pole positions lotus, ten podium finishes (four lotus 97t, 4 ligier js25 , 2 renault re60).



ef15: 1,494 cc bore 80.1 mm (3.2 in) stroke 49.4 mm (1.9 in) 7.5:1 compression, 2 garrett turbochargers.

type-b 1986

this engine boasted 2 innovative features gain widespread acceptance – static ignition , pneumatic valve timing – allowed reach 12,500 rpm. capable of generating 900 bhp (671 kw; 912 ps) in race trim, record 2 race wins , 5 pole positions lotus, 5 podium finishes (three lotus , 2 ligier). powered lotus 98t , ligier js27.



ef15b: 1,494 cc bore 80.1 mm (3.2 in) stroke 49.4 mm (1.9 in) 7.5:1 compression, 2 garrett turbochargers.

type-c mid 1986

equipped number of new features (cylinder heads, cylinder block, waste-gate, mapping, etc.) , developing more 1,200 bhp (895 kw; 1,217 ps) @ 12,500 rpm in qualifying, engine enabled ayrton senna s lotus 98t notch 4 pole positions , 3 podium finishes close v6 turbo era in style.







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