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Honda R engine#R20

{{Use dmy dates|date=June 2023}}

{{Multiple issues|

{{original research|date=November 2011}}

{{more citations needed|date=May 2021}}

}}

{{Infobox automobile engine

|name=Honda R engine

|image=Honda R20A Engine 02.JPG

|manufacturer=Honda Motor Co Ltd

|production=2006–present

|configuration=Naturally aspirated Straight-4

|displacement={{convert|1595-1997|cc|L cuin|1|order=flip|abbr=on}}

|bore={{convert|81|mm|in|2|abbr=on|}}

|stroke={{convert|77.4|mm|in|2|abbr=on}}
{{convert|87.3|mm|in|2|abbr=on}}
{{convert|96.9|mm|in|2|abbr=on}}

|valvetrain=SOHC 4 valves x cyl. with i-VTEC
DOHC 4 valves x cyl. with i-VTEC (LF Hybrid engine)

|fuelsystem=PGM-FI

|fueltype=Gasoline

|coolingsystem=Water-cooled

|block=Aluminum alloy

|head=Aluminum alloy

|compression=10.5:1-10.7:1

|redline=6800

|power={{convert|125-156|PS|kW bhp|0|abbr=on|lk=on}}

|torque={{convert|15.4-19.4|kgm|Nm lbft|0|abbr=on}}

}}

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.

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 {{convert|25|mpgus|abbr=on}} city, and {{convert|36|mpgus|abbr=on}} 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

The R16 engines all have a bore and stroke of {{cvt|81|x|77.4|mm|in|2}}, for an overall displacement of {{cvt|1.595|L|cc cuin|adj=ri1|sigfig=4}}.

=R16A=

  • Found in:
  • 2006 Honda Civic (Singapore, Egypt, Turkey Market – FA1/FD series)
  • 2012 Honda Civic (Singapore, Egypt, Turkey Market – FB series)
  • SOHC iVTEC (Chain driven cam)
  • Compression: 10.5:1
  • Power: {{cvt|125|PS|kW bhp|0}} at 6,500 rpm
  • Torque: {{cvt|15.4|kgm|Nm lbft|0}} at 4,300 rpm
  • Transmission: 5-speed
  • Redline: 6800 rpm

=R16B=

  • Found in:
  • 2016 Honda Civic (Mauritius, Singapore, Egypt, Turkey, Cyprus, South Africa, Ukraine and Brunei – FC series)
  • SOHC iVTEC (Chain driven cam)
  • Compression: 10.7:1
  • Power: {{cvt|125|PS|kW bhp|0}} at 6,500 rpm
  • Torque: {{cvt|15.6|kgm|Nm lbft|0}} at 4,300 rpm
  • Transmission: CVT-7
  • Redline: 6700 rpm

R18

File:Honda R18A Engine.JPG

The R18 engines have a bore and stroke of {{cvt|81|x|87.3|mm|in|2}}, for an overall displacement of {{cvt|1.799|L|cc cuin|adj=ri1|sigfig=4}}.

=R18A1=

  • Found in:
  • 2006–2011 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
  • SOHC iVTEC (Chain driven cam)
  • Compression: 10.5:1
  • Power: {{cvt|141|PS|kW bhp|0}} at 6300 rpm (Japanese Spec)
  • {{cvt|132|PS|kW bhp|0}} on Indian variant to use lower octane fuel
  • Torque: {{convert|17.7|kgm|Nm lbft|0|abbr=on}} at 4,300 rpm
  • Fuel Cut Off: 7150 rpm
  • Redline: 6800 rpm

=R18A2=

  • Found in:
  • 2006–2011 Honda Civic (European-market FN1 & FK2)
  • Compression: 10.5:1
  • Power: {{cvt|140|PS|kW hp|0}} at 6,300 rpm
  • Torque: {{cvt|17.7|kgm|Nm lbft|0}} at 4,300 rpm
  • cruising/economy happens during VTEC under cruising load only.
  • Redline: 6800 rpm
  • Fuel Cutoff : 7150 rpm

=R18A6=

  • Found in:
  • 2006–2011 Honda Civic (Brazil)
  • Local Fuel optimization (FlexFuel - Ethanol or Gasoline)
  • Power: {{cvt|140|PS|kW hp|0}}
  • SOHC i-VTEC (ECO Version)
  • Redline: 6800 rpm

=R18Z1=

File:Honda R18Z1.jpg

  • Found in:
  • 2012–2015 Honda Civic (FB2, FG3)
  • 2016–2020 Honda Civic (FC6, FK5)
  • SOHC iVTEC (Chain driven cam)
  • Compression: 10.6:1
  • Power: {{cvt|145|PS|kW hp|0}} at 6,500 rpm
  • Torque: {{cvt|17.8|kgm|Nm lbft|0}} at 4,300 rpm
  • Redline: 6800
  • Fuel cut off: 7100
  • Single valve mode at low RPMs
  • [http://asia.vtec.net/Engines/RiVTEC/ivtec2.jpg iVTEC engages] economy cam profile from 1000 rpm to 3500 rpm, under light engine load. Engine runs on low power cam profile by default.

=R18Z4=

  • Found in:
  • 2012–2017 Honda Civic (European-market FK2)
  • Compression: 10.6:1
  • Power: {{convert|145|PS|kW hp|0|abbr=on}} at 6,500 rpm
  • Torque: {{convert|17.8|kgm|Nm lbft|0|abbr=on}} 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
  • SOHC iVTEC (Chain driven cam)
  • Compression: 10.6:1
  • Power: {{convert|141|PS|kW hp|0|abbr=on}} at 6,500 rpm
  • Torque: {{convert|17.7|kgm|Nm lbft|0|abbr=on}} at 4,300 rpm

File:Honda R18Z9 Engine.jpg

=R18Z9=

  • Found in:
  • 2016–2022 Honda HR-V
  • Compression: 10.6:1
  • Power: {{convert|143|PS|kW hp|0|abbr=on}} at 6,500 rpm
  • Torque: {{convert|17.7|kgm|Nm lbft|0|abbr=on}} at 4,300 rpm

=R18ZF=

  • Found in:
  • 2014–2022 Honda HR-V (Thailand and Indonesia)[http://www.car.go.th//api/render/tagImageEcoA4grayCT/3124835fdaf7497bb7c0700143d7662a Car Thailand] {{dead link|date=June 2023}}
  • Compression: 10.6:1
  • Power: {{convert|143|PS|kW hp|0|abbr=on}} at 6,500 rpm
  • Torque: {{convert|17.5|kgm|Nm lbft|0|abbr=on}} at 4,300 rpm

R20

The R16 engines all have a bore and stroke of {{cvt|81|x|96.9|mm|in|2}}, for an overall displacement of {{cvt|1.997|L|cc cuin|adj=ri1|sigfig=4}}.

=R20A1=

File:Honda R20A Engine.JPG

  • Found in:
  • 2007–2011 Honda CR-V (RE1, RE2)
  • 2008 – Honda Stream (RSZ)
  • 2013–2015 Acura ILX (DE1)
  • Compression: 10.5:1
  • Power: {{convert|152|PS|kW bhp|0|abbr=on}} at 6,200 rpm
  • Torque: {{convert|19.4|kgm|Nm lbft|0|abbr=on}} at 4,200 rpm
  • Redline: 6800 rpm
  • Fuel cut off: 7100 rpm
  • SOHC run by timing chain
  • [http://asia.vtec.net/Engines/RiVTEC/ivtec2.jpg 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)
  • Compression: 10.5:1
  • Power: {{convert|152|PS|kW bhp|0|abbr=on}} at 6,200 rpm
  • Torque: {{convert|19.4|kgm|Nm lbft|0|abbr=on}} 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)
  • Compression: 10.5:1
  • Power: {{convert|157|PS|kW bhp|0|abbr=on}} at 6,300 rpm
  • Torque: {{convert|19.2|kgm|Nm lbft|0|abbr=on}} at 4,300 rpm

=R20A5=

  • Found in:
  • 2012–2015 Honda Civic (Southeast Asian FB3)
  • Compression: 10.6:1
  • Power: {{convert|157|PS|kW bhp|0|abbr=on}} at 6,500 rpm
  • Torque: {{convert|19.4|kgm|Nm lbft|0|abbr=on}} at 4,300 rpm

=R20A6=

  • Found in:
  • 2012–2016 – Honda CR-V (RM1, RM2)
  • Compression: 10.6:1
  • Power: {{convert|157|PS|kW bhp|0|abbr=on}} at 6,500 rpm
  • Torque: {{convert|19.4|kgm|Nm lbft|0|abbr=on}} at 4,300 rpm

=R20A9=

  • Found in:
  • 2012–2016 – Honda CR-V (RE5)
  • Compression: 10.6:1
  • Power: {{convert|157|PS|kW bhp|0|abbr=on}} at 6,500 rpm
  • Torque: {{convert|19.4|kgm|Nm lbft|0|abbr=on}} at 4,300 rpm

=R20Z1=

  • Found in:
  • 2012–2015 Honda Civic (FB3)
  • SOHC iVTEC (Chain driven cam)
  • Compression: 10.6:1
  • Power: {{convert|155|PS|kW bhp|0|abbr=on}} at 6,500 rpm
  • Torque: {{convert|19.4|kgm|Nm lbft|0|abbr=on}} at 4,300 rpm

=R20Z2/R20Z3=

  • Found in:
  • 2013–2017 Honda Accord (CR1)
  • Compression: 10.6:1
  • Power: {{cvt|155|PS|kW bhp|0}} at 6,500 rpm
  • Torque: {{cvt|19.4|kgm|Nm lbft|0}}

{{anchor|LF}} LF (R20-based hybrid engine)

={{anchor|LFA1}} LFA1 (i-VTEC + Sport Hybrid i-MMD)=

This version includes i-MMD ("Intelligent Multi Mode Drive").

  • DOHC 16 valve
  • Displacement: {{convert|1993|cc|L CID|1|abbr=on|order=flip}}
  • Bore x Stroke: {{convert|81x96.7|mm|in|2|abbr=on}}
  • Power (Engine): {{convert|145|PS|kW hp|0|abbr=on}} / 6,200 rpm
  • Torque (Engine): {{convert|175|Nm|lbft|0|abbr=on}} / 3,500 rpm
  • Power (Motor): {{convert|184|PS|kW hp|0|abbr=on}} / 5,000-6,000 rpm
  • Torque (Motor): {{convert|315|Nm|lbft|0|abbr=on}} / 0–2,000 rpm
  • Power (Combined): {{convert|215|PS|kW hp|0|abbr=on}} / 6,200 rpm
  • Honda Odyssey Hybrid/e:HEV (Japan, RC4){{Cite web|url=https://www.honda.co.jp/ODYSSEY/common/pdf/odyssey_spec_list.pdf|title=Odyssey Spec List|website=Honda (Japan)|language=ja}}
  • Honda Stepwgn Hybrid/e:HEV (Japan, RP5){{Cite web|url=https://www.honda.co.jp/STEPWGN/common/pdf/stepwgn_spec_list.pdf|title=Stepwgn Spec List|website=Honda (Japan)|language=ja}}
  • Honda Accord hybrid (N. America) (2014 - 2022){{cite press release |title=Honda Two-Motor Hybrid-Electric System |url=https://hondanews.com/en-US/honda-automobiles/releases/release-1503019bd8a757ea08267d7944378955-honda-two-motor-hybrid-electric-system |access-date=15 June 2024 |date=30 January 2023}}
  • Honda CR-V hybrid (N. America) (2020 - 2022)

={{anchor|LFB1}} LFB1 (i-VTEC + Sport Hybrid i-MMD)=

This version includes i-MMD ("Intelligent Multi Mode Drive").

  • DOHC 16 valve
  • Displacement: {{convert|1993|cc|L CID|1|abbr=on|order=flip}}
  • Bore x Stroke: {{convert|81x96.7|mm|in|2|abbr=on}}
  • Power (Engine): {{convert|145|PS|kW hp|0|abbr=on}} / 6,200 rpm
  • Torque (Engine): {{convert|175|Nm|lbft|0|abbr=on}} / 3,500 rpm
  • Power (Motor): {{convert|184|PS|kW hp|0|abbr=on}} / 5,000-6,000 rpm
  • Torque (Motor): {{convert|315|Nm|lbft|0|abbr=on}} / 0–2,000 rpm
  • Power (Combined): {{convert|215|PS|kW hp|0|abbr=on}} / 6,200 rpm
  • Honda Accord Hybrid (Thailand, CV3){{Cite web|url=http://www.car.go.th//api/render/tagImageEcoA4grayCT/e6c29202d79f494d9f7b81b6a22be27d|title=ECO sticker - Honda Accord Hybrid TECH|website=ECO sticker - The Office of Industrial Economics, Ministry of Industry Thailand|language=th|access-date=2020-01-18}}
  • Honda Odyssey e:HEV Absolute (International, RC4)

={{anchor|LFB-13}}LFB-13 (i-VTEC + Sport Hybrid i-MMD, e:PHEV)=

This version includes i-MMD ("Intelligent Multi Mode Drive").

  • DOHC 16 valve
  • Displacement: {{convert|1993|cc|L CID|1|abbr=on|order=flip}}
  • Bore x Stroke: {{convert|81x96.7|mm|in|2|abbr=on}}
  • Power (Engine): {{convert|145|PS|kW hp|0|abbr=on}} / 6,200 rpm
  • Torque (Engine): {{convert|175|Nm|lbft|0|abbr=on}} / 3,500 rpm
  • Power (Motor): {{convert|184|PS|kW hp|0|abbr=on}} / 5,000-6,000 rpm
  • Torque (Motor): {{convert|315|Nm|lbft|0|abbr=on}} / 0–2,000 rpm
  • Power (Combined): {{convert|215|PS|kW hp|0|abbr=on}} / 6,200 rpm
  • Honda CR-V Sport Hybrid e+ (China)

={{anchor|LFB-H4}}LFB-H4 (i-VTEC + Sport Hybrid i-MMD)=

This version includes i-MMD ("Intelligent Multi Mode Drive").

  • DOHC 16 valve
  • Displacement: {{convert|1993|cc|L CID|1|abbr=on|order=flip}}
  • Bore x Stroke: {{convert|81x96.7|mm|in|2|abbr=on}}
  • Power (Engine): {{convert|145|PS|kW hp|0|abbr=on}} / 6,200 rpm
  • Torque (Engine): {{convert|175|Nm|lbft|0|abbr=on}} / 3,500 rpm
  • Power (Motor): {{convert|184|PS|kW hp|0|abbr=on}} / 5,000–6,000 rpm
  • Torque (Motor): {{convert|315|Nm|lbft|0|abbr=on}} / 0–2,000 rpm
  • Power (Combined): {{convert|215|PS|kW hp|0|abbr=on}} / 6,200 rpm
  • Honda Accord Hybrid/e:HEV (Japan, CV3){{Cite web|url=https://www.honda.co.jp/ACCORD/common/pdf/accord_spec_list.pdf|title=Accord Spec List|website=Honda (Japan)|language=ja|access-date=2020-08-26}}
  • Honda CR-V Hybrid/e:HEV (Japan, RT5–RT6){{Cite web|url=https://www.honda.co.jp/CR-V/common/pdf/crv_spec_list.pdf|title=CR-V Spec List|website=Honda (Japan)|language=ja|access-date=2020-08-26}}
  • Honda Odyssey Hybrid/e:HEV (Japan, RC4)

File:HONDA LFC1 ENGINE.jpg

={{anchor|LFC-H4}}LFC-H4=

  • DOHC 16 valve
  • Displacement: {{convert|1993|cc|L CID|1|abbr=on|order=flip}}
  • Bore x Stroke: {{convert|81x96.7|mm|in|2|abbr=on}}
  • Power (Engine): {{convert|141|PS|kW hp|0|abbr=on}} / 6,000 rpm
  • Torque (Engine): {{convert|182|Nm|lbft|0|abbr=on}} / 4,500 rpm
  • Power (Motor): {{convert|184|PS|kW hp|0|abbr=on}} / 5,000–6,000 rpm
  • Torque (Motor): {{convert|315|Nm|lbft|0|abbr=on}} / 0–2,000 rpm
  • Honda Civic e:HEV (Japan/Europe, FL4/Thailand, FE4)
  • Honda ZR-V e:HEV (Australia, RZ4/6)
  • Honda CR-V e:HEV (Europe/China, RS)

See also

References

{{Reflist}}

External links

  • [https://web.archive.org/web/20080127052554/http://world.honda.com/news/2005/4050705_a.html Honda Worldwide, Honda Develops New 1.8l i-VTEC Engine]
  • [https://web.archive.org/web/20080216163908/http://world.honda.com/HDTV/news/2005-4050705a/ Honda Worldwide, New 1.8l i-VTEC Engine (Video)]
  • [https://www.vtec.net/articles/view-article?article_id=415957 Discussion and testing of higher octane fuel with Honda R18 engine]

{{Honda}}{{Honda automotive engine timeline (2000-present)}}

R

Category:2006 introductions

Category:Straight-four engines

Category:Gasoline engines by model