Honda R engine - Engine - auto.wikisort.org

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The Honda R engine is an inline-four engine launched in 2006 for the Honda Civic (non-Si). It is fuel injected, has an aluminum-alloy cylinder block and cylinder head, is a SOHC 16-valve design (four valves per cylinder) and utilizes Honda's i-VTEC system. The R series engine has a compression ratio of 10.5:1, features a "drive by wire" throttle system which is computer controlled to reduce pumping losses and create a smooth torque curve.

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Honda R engine

Overview
Manufacturer	Honda Motor Co Ltd
Production	2006–present
Layout
Configuration	Naturally aspirated Straight-4
Displacement	1.6–2.0 L; 97.3–121.9 cu in (1,595–1,997 cc)
Cylinder bore	81 mm (3.19 in)
Piston stroke	77.4 mm (3.05 in) 87.3 mm (3.44 in) 96.9 mm (3.81 in)
Block material	Aluminum alloy
Head material	Aluminum alloy
Valvetrain	SOHC 4 valves x cyl. with i-VTEC DOHC 4 valves x cyl. with i-VTEC (LF Hybrid enigne)
Compression ratio	10.5:1-10.7:1
RPM range
Redline	6800
Combustion
Fuel system	PGM-FI
Fuel type	Gasoline
Cooling system	Water-cooled
Output
Power output	125–156 PS (92–115 kW; 123–154 bhp)
Torque output	15.4–19.4 kg⋅m (151–190 N⋅m; 111–140 lb⋅ft)

The engine uses many advanced technologies to improve fuel economy and reduce friction. Piston rings are given an ion plating and weight is reduced with plastic and aluminum parts and variable length intake manifolds that maintain ram air at a wide RPM range. The engine also features piston cooling jets, previously available only on high performance engines, and in the ninth-generation 1.8L Civic (2012-2015) the pistons are treated with molybdenum disulfide applied in a polka-dot pattern. The automatic transmission model is rated at California Air Resources Board (CARB) ULEV-2 (Ultra Low Emissions Vehicle) with fuel economy 25 mpg_‑US (9.4 L/100 km; 30 mpg_‑imp) city, and 36 mpg_‑US (6.5 L/100 km; 43 mpg_‑imp) highway. It also uses the same computer (engine control unit) controlled distributorless coil-on-plug ignition as the Honda K-series engines. As of September 2019, the R series engines were only offered outside of Japan.

R16

R16A

Found in:
- 2006 Honda Civic (Singapore, Egypt, Turkey Market – FA1/FD series)
- 2012 Honda Civic (Singapore, Egypt, Turkey Market – FB series)
  - Displacement: 1.6 L; 97.3 cu in (1,595 cc)
  - SOHC iVTEC (Chain driven cam)
  - Compression: 10.5:1
  - Bore & stroke: 81 mm × 77.4 mm (3.19 in × 3.05 in)
  - Power: 125 PS (92 kW; 123 bhp) at 6,500 rpm
  - Torque: 15.4 kg⋅m (151 N⋅m; 111 lb⋅ft) at 4,300 rpm
  - Transmission: 5-speed
  - Redline: 6800 rpm

R16B

Found in:
- 2016 Honda Civic (Singapore, Egypt, Turkey, Cyprus, South Africa, Ukraine and Brunei – FC series)
  - Displacement: 1.6 L; 97.5 cu in (1,597 cc)
  - SOHC iVTEC (Chain driven cam)
  - Compression: 10.7:1
  - Bore & stroke: 81 mm × 77.5 mm (3.19 in × 3.05 in)
  - Power: 125 PS (92 kW; 123 bhp) at 6,500 rpm
  - Torque: 15.6 kg⋅m (153 N⋅m; 113 lb⋅ft) at 4,300 rpm
  - Transmission: CVT-7
  - Redline: 6700 rpm

R18

R18A1

Found in:
- 2006–2012 Honda Civic (South Africa/Thailand/Malaysia/Indonesia/Philippines/Taiwan/Japan/Indian-market FD1, Brazil, American/Canadian-market FA1 & FG1)
- 2007–2009 Honda FR-V (European-market BE1)
- 2008-2015 Honda City
- 2007-2014 Honda Stream
  - Displacement: 1.8 L; 109.8 cu in (1,799 cc)
  - SOHC iVTEC (Chain driven cam)
  - Compression: 10.5:1
  - Bore & stroke: 81 mm × 87.3 mm (3.19 in × 3.44 in)
  - Power: 141 PS (104 kW; 139 bhp) at 6300 rpm (Japanese Spec)
  - Torque: 17.7 kg⋅m (174 N⋅m; 128 lb⋅ft) at 4,300 rpm
  - Fuel Cut Off: 6900 rpm
  - Redline: 6800 rpm

R18A2

Found in:
- 2006–2011 Honda Civic (European-market FN1 & FK2)
  - Displacement: 1.8 L; 109.8 cu in (1,799 cc)
  - Compression: 10.5:1
  - Bore & stroke: 81 mm × 87.3 mm (3.19 in × 3.44 in)
  - Power: 140 PS (103 kW; 138 hp) at 6,300 rpm
  - Torque: 17.7 kg⋅m (174 N⋅m; 128 lb⋅ft) at 4,300 rpm
  - cruising/economy happens during VTEC under cruising load only.
  - Redline: 6800 rpm
  - Fuel Cutoff : 7150 rpm

R18Z1

Found in:
- 2012–2015 Honda Civic (FB2, FG3)
- 2016–2020 Honda Civic (FC6, FK5)
  - Displacement: 1.8 L; 109.8 cu in (1,799 cc)
  - SOHC iVTEC (Chain driven cam)
  - Compression: 10.6:1 (performance benefits from higher octane fuel)
  - Bore & stroke: 81 mm × 87.3 mm (3.19 in × 3.44 in)
  - Power: 145 PS (107 kW; 143 hp) at 6,500 rpm
  - Torque: 17.8 kg⋅m (175 N⋅m; 129 lb⋅ft) at 4,300 rpm
  - Redline: 6800
  - Fuel cut off: 7100
  - Single valve mode at low RPMs
  - iVTEC engages economy cam profile from 1000 rpm to 3500 rpm, under light engine load. Engine runs on power cam profile by default.

R18Z4

Found in:
- 2012-2016 – Honda Civic (European-market FK2)
  - Displacement: 1.8 L; 109.7 cu in (1,798 cc)
  - Compression: 10.6:1
  - Bore & stroke: 81 mm × 87.3 mm (3.19 in × 3.44 in)
  - Power: 145 PS (107 kW; 143 hp) at 6,500 rpm
  - Torque: 17.8 kg⋅m (175 N⋅m; 129 lb⋅ft) at 4,300 rpm
  - Redline: 6800 rpm
  - Fuel cut off : 7100 rpm
  - cruising/economy happens during VTEC under cruising load only.
  - Balancer Shaft on this R18.

R18Z6

Found in:
- 2013-2017 – Honda Jade
  - Displacement: 1.8 L; 109.8 cu in (1,799 cc)
  - SOHC iVTEC (Chain driven cam)
  - Compression: 10.6:1
  - Bore & stroke: 81 mm × 87.3 mm (3.19 in × 3.44 in)
  - Power: 141 PS (104 kW; 139 hp) at 6,500 rpm
  - Torque: 17.7 kg⋅m (174 N⋅m; 128 lb⋅ft) at 4,300 rpm

R18Z9

Found in:
- 2016 – Honda HR-V
  - Displacement: 1.8 L; 109.8 cu in (1,799 cc)
  - Compression: 10.6:1
  - Bore & stroke: 81 mm × 87.3 mm (3.19 in × 3.44 in)
  - Power: 141 PS (104 kW; 139 hp) at 6,500 rpm
  - Torque: 17.7 kg⋅m (174 N⋅m; 128 lb⋅ft) at 4,300 rpm

R18ZF

Found in:
- 2014 – Honda HR-V (Thailand)[1]
  - Displacement: 1.8 L; 109.8 cu in (1,799 cc)
  - Compression: 10.6:1
  - Bore & stroke: 81 mm × 87.3 mm (3.19 in × 3.44 in)
  - Power: 141 PS (104 kW; 139 hp) at 6,500 rpm
  - Torque: 17.5 kg⋅m (172 N⋅m; 127 lb⋅ft) at 4,300 rpm

R20

R20A1

Found in:
- 2007–2011 Honda CR-V (RE1, RE2)
- 2008 – Honda Stream (RSZ)
- 2013-2015 Acura ILX (DE1)
  - Displacement: 2.0 L; 121.9 cu in (1,997 cc)
  - Compression: 10.5:1
  - Bore & stroke: 81 mm × 96.9 mm (3.19 in × 3.81 in)
  - Power: 152 PS (112 kW; 150 bhp) at 6,200 rpm
  - Torque: 19.4 kg⋅m (190 N⋅m; 140 lb⋅ft) at 4,200 rpm
  - Redline: 6800 rpm
  - Fuel cut off: 7100 rpm
  - SOHC run by timing chain
  - iVTEC engages economy cam profile from 1000 rpm to 3500 rpm, under light engine load. Engine runs on power cam profile by default

R20A2

Found in:
- 2007–2011 Honda CR-V (RE5)
  - Displacement: 2.0 L; 121.9 cu in (1,997 cc)
  - Compression: 10.5:1
  - Bore & stroke: 81 mm × 96.9 mm (3.19 in × 3.81 in)
  - Power: 152 PS (112 kW; 150 bhp) at 6,200 rpm
  - Torque: 19.4 kg⋅m (190 N⋅m; 140 lb⋅ft) at 4,200 rpm

R20A3

Found in:
- 2008–2012 Honda Accord (CP1) (156 hp)
- 2008–2015 Honda Accord (CU1/CN1/CW1) (156 hp)
- 2013–2020 Proton Perdana (CP3) (156 hp)
  - Displacement: 2.0 L; 121.9 cu in (1,997 cc)
  - Compression: 10.5:1
  - Bore & stroke: 81 mm × 96.9 mm (3.19 in × 3.81 in)
  - Power: 157 PS (115 kW; 155 bhp) at 6,300 rpm
  - Torque: 19.2 kg⋅m (188 N⋅m; 139 lb⋅ft) at 4,300 rpm

R20A5

Found in:
- 2012–2015 Honda Civic (Southeast Asian FB3)
  - Displacement: 2.0 L; 121.9 cu in (1,997 cc)
  - Compression: 10.6:1
  - Bore & stroke: 81 mm × 96.9 mm (3.19 in × 3.81 in)
  - Power: 157 PS (115 kW; 155 bhp) at 6,500 rpm
  - Torque: 19.4 kg⋅m (190 N⋅m; 140 lb⋅ft) at 4,300 rpm

R20A6

Found in:
- 2012-2016 – Honda CR-V (RM1, RM2)
  - Displacement: 2.0 L; 121.9 cu in (1,997 cc)
  - Compression: 10.6:1
  - Bore & stroke: 81 mm × 96.9 mm (3.19 in × 3.81 in)
  - Power: 157 PS (115 kW; 155 bhp) at 6,500 rpm
  - Torque: 19.4 kg⋅m (190 N⋅m; 140 lb⋅ft) at 4,300 rpm

R20A9

Found in:
- 2012-2016 – Honda CR-V (RE6)
  - Displacement: 2.0 L; 121.9 cu in (1,997 cc)
  - Compression: 10.6:1
  - Bore & stroke: 81 mm × 96.9 mm (3.19 in × 3.81 in)
  - Power: 157 PS (115 kW; 155 bhp) at 6,500 rpm
  - Torque: 19.4 kg⋅m (190 N⋅m; 140 lb⋅ft) at 4,300 rpm

R20Z1

Found in:
- 2012–2015 Honda Civic (FB3)
  - Displacement: 2.0 L; 121.9 cu in (1,997 cc)
  - Compression: 10.6:1
  - Bore & stroke: 81 mm × 96.9 mm (3.19 in × 3.81 in)
  - Power: 155 PS (114 kW; 153 bhp) at 6,500 rpm
  - Torque: 19.4 kg⋅m (190 N⋅m; 140 lb⋅ft) at 4,300 rpm

R20Z2/R20Z3

Found in:
- 2013–2017 Honda Accord (CR1)
  - Displacement: 2.0 L; 121.9 cu in (1,997 cc)
  - Compression: 10.6:1
  - Bore & stroke: 81 mm × 96.9 mm (3.19 in × 3.81 in)
  - Power: 155 PS (114 kW; 153 bhp) at 6,500 rpm
  - Torque: 19.4 kg⋅m (190 N⋅m; 140 lb⋅ft) a

LF (R20-based hybrid engine)

LFA1 (i-VTEC + Sport Hybrid “i-MMD” (Intelligent Multi Mode Drive))

DOHC 16 valve
Honda Odyssey Hybrid/e:HEV (Japan, RC4)[2]
Honda Stepwgn Hybrid/e:HEV (Japan, RP5)[3]

LFB1 (i-VTEC + Sport Hybrid “i-MMD” Intelligent Multi Mode Drive)

DOHC 16 valve
- Displacement: 2.0 L; 121.6 cu in (1,993 cc)
- Bore x Stroke: 81 mm × 96.7 mm (3.19 in × 3.81 in)
- Power (Engine): 145 PS (107 kW; 143 hp) / 6,200 rpm
- Torque (Engine): 175 N⋅m (129 lb⋅ft) / 3,500 rpm
- Power (Motor): 184 PS (135 kW; 181 hp) / 5,000-6,000 rpm
- Torque (Motor): 315 N⋅m (232 lb⋅ft) / 0–2,000 rpm
- Power (Combined): 215 PS (158 kW; 212 hp) / 6,200 rpm
Honda Accord Hybrid (Thailand, CV3)[4]
Honda Odyssey e:HEV Absolute (International, RC4)

LFB-13 (i-VTEC + Sport Hybrid “i-MMD” Intelligent Multi Mode Drive e:PHEV)

DOHC 16 valve
- Displacement: 2.0 L; 121.6 cu in (1,993 cc)
- Bore x Stroke: 81 mm × 96.7 mm (3.19 in × 3.81 in)
- Power (Engine): 145 PS (107 kW; 143 hp) / 6,200 rpm
- Torque (Engine): 175 N⋅m (129 lb⋅ft) / 3,500 rpm
- Power (Motor): 184 PS (135 kW; 181 hp) / 5,000-6,000 rpm
- Torque (Motor): 315 N⋅m (232 lb⋅ft) / 0–2,000 rpm
- Power (Combined): 215 PS (158 kW; 212 hp) / 6,200 rpm
Honda CR-V Sport Hybrid e+ (China)

LFB-H4 (i-VTEC + Sport Hybrid “i-MMD” Intelligent Multi Mode Drive)

DOHC 16 valve
- Displacement: 2.0 L; 121.6 cu in (1,993 cc)
- Bore x Stroke: 81 mm × 96.7 mm (3.19 in × 3.81 in)
- Power (Engine): 145 PS (107 kW; 143 hp) / 6,200 rpm
- Torque (Engine): 175 N⋅m (129 lb⋅ft) / 3,500 rpm
- Power (Motor): 184 PS (135 kW; 181 hp) / 5,000–6,000 rpm
- Torque (Motor): 315 N⋅m (232 lb⋅ft) / 0–2,000 rpm
- Power (Combined): 215 PS (158 kW; 212 hp) / 6,200 rpm
Honda Accord Hybrid (Japan, CV3)[5]
Honda CR-V Hybrid (Japan, RT5–RT6)[6]
Honda Odyssey Hybrid/e:HEV (Japan, RC4)

LFC-H4

DOHC 16 valve
- Displacement: 2.0 L; 121.6 cu in (1,993 cc)
- Bore x Stroke: 81 mm × 96.7 mm (3.19 in × 3.81 in)
- Power (Engine): 141 PS (104 kW; 139 hp) / 6,000 rpm
- Torque (Engine): 182 N⋅m (134 lb⋅ft) / 4,500 rpm
- Power (Motor): 184 PS (135 kW; 181 hp) / 5,000–6,000 rpm
- Torque (Motor): 315 N⋅m (232 lb⋅ft) / 0–2,000 rpm
Honda Civic e:HEV (Japan/Europe, FL4/Thailand, FE4)

References

http://www.car.go.th//api/render/tagImageEcoA4grayCT/3124835fdaf7497bb7c0700143d7662a ^{[bare URL image file]}
"Odyssey Spec List" (PDF). Honda (Japan) (in Japanese).
"Stepwgn Spec List" (PDF). Honda (Japan) (in Japanese).
"ECO sticker - Honda Accord Hybrid TECH". ECO sticker - The Office of Industrial Economics, Ministry of Industry Thailand (in Thai). Retrieved 2020-01-18.
"Accord Spec List" (PDF). Honda (Japan) (in Japanese). Retrieved 2020-08-26.
"CR-V Spec List" (PDF). Honda (Japan) (in Japanese). Retrieved 2020-08-26.

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R16