Engines used by French automaker Renault SA have historically been referenced in technical specifications along two distinct systems: A purely numeric system used from the origins of the company until the mid-1980s An alphanumeric system in use since then

Numbering systems

Numeric

The numeric engine referencing system used until the mid-1980s was simply the chronological sequence of engine development projects. Thus, variants based on the same engine block may have unrelated numbers.

Alphanumeric

The system in use since the mid-1980s is of the format XnY-zzz where X is a letter specifying the engine family n is a one-digit code specifying the engine architecture as follows: Petrol engine with single-barrel carburetor and parallel valves (a layout often but not always associated with an overhead valve design) Petrol engine with double-barrel carburetor and parallel valves Petrol engine with single- or multi-point fuel injection and parallel valves Petrol engine with four valves per cylinder Petrol engine with direct petrol injection, prior to F engine: single-barrel carburetor and crossflow valve layout (deprecated) Petrol engine with double-barrel carburetor and crossflow valve layout Petrol engine with multi-point fuel injection with half-spherical combustion chambers and two valves per cylinder (includes also an early 16-valve version of the F-type engine) Diesel engine with indirect injection (prechamber) Diesel engine with direct injection Y is a one-letter indicator of displacement: A: under 750 cc B-U: from 750 to 2,250 cc in 50 cc, then 100 cc increments as displacement increases V-Z: above 2250 cc in increments larger than 100 cc zzz is a three-character alphanumeric code (usually starting with 7 or A) referring to key details of the variant's configuration (e.g., turbocharged, implemented in a specific vehicle, manual or automatic transmission, catalytic converter or not, etc. An odd number refers to an engine configured for automatic transmission, while an even number is meaning manual gearbox.)

Engine families

A

The A engine was an all-aluminum overhead valve inline-four designed in the mid-1960s for the Renault 16 and produced in three variants: A1K: 1,470 cc AxL: 1,565-1,605 cc (also used in the R15 and R17 models). AxM: 1,647 cc

B

The B family (for the Billancourt factory where it was produced, also referred to as the Billancourt engine) was a cast-iron overhead valve three-bearing crankshaft inline-four designed in the mid-1940s for the 4CV and also used in the Renault 4 and Dauphine: 748 cc (out of production before alphanumeric codes were introduced) 782 cc (out of production before alphanumeric codes were introduced) B1B: 845 cc

B/BR (2016-) The new B family three cylinder petrol engine appeared from 2016. NMKV developed the BR06 engine based on this engine for Nissan and Mitsubishi Kei car B4A/BR08: 799 cc Renault Kwid, Datsun redi-Go B4D: 999 cc (71x84); Renault Kwid, Renault Twingo, Renault Clio, Renault Triber, Dacia Sandero, Dacia Logan

C

The C family (for the Cléon-Fonte factory where it was produced, also referred to as Sierra in early variants), being also a cast-iron overhead valve inline-four but now with a five-bearing crankshaft, designed in the early 1960s for the Renault 8. An extremely sturdy, low-cost design, it was continuously refined over its 35-year career and was used in every supermini and compact Renault type up to and including the 1993 Twingo: C1C (689): 956 cc (65x72); 32 kW C1E (688): 1,108 cc (70x72); 28-34 kW C1G: 1,237 cc (71,5x77); 40 kW C3G: 1,239 cc (74x72); 40 kW; monopoint injection 810: 1,289 cc (73x77; out of production before alphanumeric codes were introduced); 32-47 kW C3J: 1,390 cc (75,8x77); 43 kW; monopoint injection. C1J/C2J (847): 1,397 cc (76x77); 43-52 kW normal aspiration / 77-88 kW turbo C6J (840): 1,397 cc (76x77 with hemispherical head); 68 kW normal aspiration, 79-116 kW turbo C7K: 1,430 cc (76x79)

CH The CH-serie was a 90° V6 engine developed by Gordini for Renault's autosport activities, the engine was used by Equipe Renault Elf in Formula One from 1973 to 1978. This François Castaing design was the predecessor of the famous EF series. CH1 (N/A): 1,997 cc Bore 86.0 mm (3.4 in) Stroke 57.3 mm (2.25 in) 285 bhp @ 9,800rpm (1973), 300 bhp @ 10,500rpm (1977) CHS (Turbo): 1,997 cc Bore 86.0 mm (3.4 in) Stroke 57.3 mm (2.25 in) 500 bhp @ 9,500rpm (1975–1978) CHS 2 (Turbo): 2,138 cc Bore 89.0 mm (3.5 in) Stroke 57.3 mm (2.25 in) 520/540 bhp @ 9,500rpm (1978)

D

The D family is the successor to the smaller versions of Type C, introduced in the mid-1990s, and is a cast-iron overhead camshaft inline-4 that powers the Renault Twingo: D4F: 1149 cc 16v 75 bhp - 2001 (petrol engine used on Dacia Sandero II, Dacia Logan II, Renault Clio and the Proton Savvy) D4Ft: 1149 cc 16v 100 bhp - 2007 (A turbocharged version of the D4F, with uprated internals to support the extra power produced) D7F: 1149 cc 8v 54 bhp - 1996 (uprated to 57 bhp in 2001) A 1000 cc D7D version was abandoned after early development.

E

The E family (for Energy) is the successor to the larger versions of Type C. It is a cast-iron overhead camshaft inline-4 introduced on the Renault 19 in 1988 and widely used in the Clio and Mégane lineups: E5F/E7F: 1171 cc E5J/E6J/E7J: 1390 cc (E7J 260 with gearbox JH3 050 - is used in Dacia SuperNova. Solenza has E7J 262) E7M/E4M: 1598 cc

EF

The EF-serie was a 90° V6 Turbocharged engine jointly developed by Renault and Gordini, the engine was used by Equipe Renault Elf in Formula One from 1977 to 1985. This engine derived from the CH series designed by François Castaing, the F1 engine was developed by Bernard Dudot. EF1 Turbo: 1,492 cc Bore 86.0 mm (3.4 in) Stroke 42.8 mm (1.7 in) 7.0:1 Compression 525 bhp (1977), 530 bhp (1979), 585 bhp (1982), 650 bhp (1983) EF1 Bi-Turbo: 1,492 cc Bore 86.0 mm (3.4 in) Stroke 42.8 mm (1.7 in) 7.0:1 Compression 530 bhp (1979), 585 bhp (1982), 650 bhp (1983) EF4(B) Bi-Turbo: 1,492 cc Bore 86.0 mm (3.4 in) Stroke 42.8 mm (1.7 in) 7.0:1 Compression 760 bhp (1984–1986) EF15(B, C) Bi-Turbo: 1,494 cc Bore 80.1 mm (3.2 in) Stroke 49.4 mm (1.9 in) 7.5:1 Compression 815 bhp (1985–1986), 900 bhp (1986)

F

The F inline-4 family (for Fonte, French for cast iron) was the successor to the A family. Launched in 1981 on the Renault 9 and Renault 11, it has been the mainstay of Renault's engine lineup through the early 2000s in a succession of increasingly powerful petrol and Diesel variants in overhead camshaft configurations. It was also Renault's first production four-valve design. It is being replaced by the M engine resp. R engine (diesel only). F1N/F2N/F3N: 1721 cc F7P: 1764 cc (injection R19 16V 138HP) F3P: 1794 cc F4P: 1783 cc (evolution of the F3P, 16V with variable valve control on the inlet camshaft) F3R/F4R/F7R: 1998 cc F5R: 1998cc (direct fuel injection - IDE - only 2 years in production, used in the Megane Coupé and the Laguna II) F8Q/F9Q: 1870 cc (indirect injection/direct injection/common rail)

G

The G engine was designed in the late 1980s to be a modular family of overhead camshaft inline 4- and 5-cylinder petrol and diesel engines. A G7R petrol and a G8T Diesel variant were in development when Renault announced a merger with Volvo who was designing its own modular family along the same lines. The group decided to cancel the petrol versions, but diesel production started in 1993 and they were built for nearly two decades, until 2011. Despite the breakdown of the merger in 1993, Renault did use Volvo petrol engines (Type N) in its mid- and full-size models until the early 2000s.

G8T/G9T: 2188 cc G9U: 2464 cc

H

H engines summarize two families of gasoline engines, the smaller with a max. cylinder bore of 72.2 mm and a larger family with typically 78 mm bore:

The smaller family covers 0.9 - 1.33 litres of swept volume and was co-developed by Renault, Mercedes-Benz and Nissan. The largest naturally aspirated version has three cylinders and 1.0L, four cylinder engines are not known without turbocharging. This family was introduced to Renault, Mercedes and Nissan cars sold in Europe.

The bigger family covers 1.0 - 1.6 litres of swept volume and are co-developed by Renault and Nissan. Engines are mostly naturally aspirated while some versions with turbo or super charging are available. Most engines had been introduced by Nissan.

Multiple usage of the Renault H series resp. Nissan HR name plates may cause some confusion because both families offer a three-cylinder 1.0L version and another 1.2L version with 3 resp. 4 cylinders. It appears to be that the earlier engine was named HR10 (bore 78mm x 69.7 mm stroke) while the later got HRA0 (72.2 x 83.1) resp. the earlier was named HR12 (78 x 83.6) and the later got HRA2 (72.2 x 73.1). Renault may not suffer from this because they never utilized the bigger three cylinder engines. Nonetheless both families have DOHC and an aluminium alloy crankcase and cylinder head. For this engine family some of the naming system has been taken over from Nissan: 't' means 'turbo-charged' and 'k' stands for 'kaizen' which means 'change for better' or 'continuous improvement' in Japanese.

late 2008- : H4Jt, 1397 cc, turbo-charged petrol engine used on Renault Mégane 04/2009- : H4M, 1598 cc, petrol engine used on Renault Samsung SM3 03/2010- : H4K, 1498cc, petrol engine used on Renault Duster, Renault Captur 09/2012- : H4Mk, 1598 cc, updated H4M petrol engine used on Renault Samsung SM3 02/2012- : H5Ft, 1197/1198 cc, turbo-charged petrol engine used on Renault Clio IV, Renault Captur, Renault Kangoo II, Renault Mégane III, Renault Mégane IV, Renault Scénic III, Renault Scénic IV, Renault Kadjar, Dacia Lodgy, Dacia Dokker, Dacia Duster. Marketed as the 1.2 TCe, this engine has been plagued by abnormal oil consumption. 05/2012- : H4Bt, 898 cc, turbo-charged petrol engine used on Dacia Sandero II, Dacia Logan II, Nissan Micra, Renault Clio IV, Renault Captur, Renault Twingo III, Smart Fortwo 11/2014- : H4D, 999 cc, n/a petrol engine used on Renault Twingo 05/2018- : H5Ht, 1332 cc, used on Mercedes A class(W177) and other compact cars, Renault Scenic IV, Renault Captur, Renault Megane IV, Renault Clio V, Nissan Qashqai, Renault Kadjar, Dacia Duster, Dacia Lodgy, Renault Samsung XM3, Renault Oroch 04/2020- : H4Dt/H5D, 999 cc, turbo-charged petrol engine used on Renault Clio, Nissan Almera, Dacia/Renault Duster

J

The J family (also referred to as the Douvrin engine) was an all-aluminum overhead camshaft inline-four design jointly developed with PSA. Introduced in 1977, it was phased out in 1996 and replaced by the F series. J5R/J6R/J7R: 1995 cc J6T/J7T: 2165 cc J8S: 2068 cc (diesel)

K

The K type is a major evolution of the E type. K4J/K7J: 1,390 cc (16v/8v) K4M/K7M: 1,598 cc (16v/8v) K9K: 1,461 cc (dCi)

L

The L type is an overhead camshaft petrol V6 developed jointly with PSA, who refer to it as the ES engine:

Renault used this engine first in the Laguna in 1997, shortly after it became available in the Safrane, and the Espace rated . Engines after 2001 got a new injection system and variable valve timing, this variant is rated , was being used in the Avantime, and the Laguna II V6. The engine was also used in the Clio V6, rated in the phase 1 vehicles, and after the facelift. L7X: 2,946 cc

M

The M engine is an overhead camshaft engine developed jointly with Nissan, who refer to it as the MR engine. Two Diesel versions are in use at Renault as of the mid-2000s, although the petrol versions already launched by Nissan will almost certainly be used as well. M9R: 1,995 cc, bore 84mm, stroke 90mm (diesel engine used in Nissan Qashqai, Renault Mégane, Scénic, Laguna, Vel Satis, Koleos and Espace; launched early 2005) M9T: 2,298 cc, bore 85mm, stroke 101,3mm (diesel engine used in Master and other vans, launched 2010, Nissan Navara D23 (YS23DDT/T) from 2014)