| 词条 | Volvo B18 engine |
| 释义 |
| name = Volvo B18, B20 | image = Overhauled Volvo B 20 Engine Front.jpg | caption = Volvo B20 | manufacturer = Volvo | configuration = Naturally aspirated Inline-4 | production = {{ubl|1961–1968 (B18)|1969–1981 (B20)}} | predecessor = Volvo B4B engine | successor = Volvo Redblock Engine | bore = {{ubl|{{convert|84.2|mm|in|2|abbr=on}} (B18)|{{convert|88.9|mm|in|1|abbr=on}} (B20)}} | stroke = {{convert|80|mm|in|2|abbr=on}} | displacement = {{ubl|{{convert|1778|cc|L cuin|1|order=flip|abbr=on}}|{{convert|1986|cc|L cuin|1|order=flip|abbr=on}}}} | length = | width = | height = | weight = | block = Cast iron | head = Cast iron | valvetrain = OHV or DOHC | supercharger = | turbocharger = | management = Bosch D-Jetronic or K-Jetronic | fuelsystem = {{Unbulleted list|SU or Zenith/Stromberg carburettors|Electronic fuel injection|Mechanical fuel injection}} | fueltype = Gasoline | oilsystem = Wet sump | coolingsystem = Water cooled | power = {{convert|40-225|bhp|kW|1|abbr=on}} | specpower = | torque = | compression = 8.7:1, 9.5:1, 10.5:1 }} This B18 is a {{convert|1778|cc|L|1|order=flip}} automobile Inline-four engine produced by Volvo from 1961 through 1968. The cam-in-block engine had overhead valves (OHV) operated by pushrods. The crankshaft rode in five main bearings, making the B18 quite different in design from its predecessor, the three-bearing B16. A larger {{convert|1986|cc|L|1|order=flip}} version called the B20 appeared in 1969. These engines are reputed to be very durable. The world's highest mileage car, a 1966 Volvo P1800, traveled more than {{convert|3039122|mi|km|order=flip|abbr=on}} on its original B18 engine.[2][3] Despite their OHV and pushrod design, the engines can rev to 6,500 rpm. B18The B18 displaced {{convert|1778|cc|L cuin|1|order=flip|abbr=on}}, with a bore of {{convert|84.14|mm|in|2|abbr=on}} and stroke of {{convert|80|mm|in|2|abbr=on}}. The engine was used in Volvo's PV544, P210 Duett, 120 (Amazon), P1800 and 140 series. The B18 could also be found in the L3314 and the Bandvagn 202 military vehicles. It was fitted to many Volvo Penta sterndrive marine propulsion systems. It was also used in the Facel Vega Facel III and the Marcos 1800 GT. There are four variations of this engine:
DOHCIn 1971 Swedish engineer Gunnar Axelsson developed a DOHC cylinder head for the B18 engine family.[5] This cylinder head was used in competition Volvos for several years.[6] On 1 January 2014 the Grainger & Worrall company announced that they had partnered with Axelsson to reproduce the DOHC head for the B18 engine.[7] Power output of the base engine was expected to be {{convert|190|bhp|kW|1|abbr=on}}, while a high-output version developing {{convert|225|bhp|kW|1|abbr=on}} would also be available. B36{{main|Volvo B36 engine}}In 1952 Volvo unveiled the Volvo Philip concept car powered by a 3.6 litre V8 engine that would later be called the B36. The V8 engine had exactly the same bore and stroke dimensions as the four-cylinder B18, leading some to suggest that the B18 is one-half of the V8.[8] Significant differences between the two engines included the fact that while the cylinder heads on the V8 are crossflows, the four cylinder has both intake and exhaust ports on the same side. This suggests that the engines are for the most part separate designs.[9][10] B20The B20 engine displaced {{convert|1986|cc|L cuin|1|order=flip|abbr=on}}, with the cylinders on {{convert|105|/|108|mm|in|2|abbr=on}} split bore centers, where the spacing between cylinders 2 and 3 is wider than between cylinders 1 and 2 or 3 and 4. The design is virtually identical to the earlier B18, but with an enlarged {{convert|88.9|mm|in|1|abbr=on}} bore, thus most parts are functionally interchangeable, albeit with running changes to the manufacture and design of components. The B20 engine was used in the Volvo 120, 1800, 140, C202 and 240 series, and also in the Bofors Haubits FH77 howitzer. The B20 was produced from 1969 to 1981. There are five variations of this engine:
The B20E and B20F versions featured larger valves, and intake/exhaust ports and for 1974-1975 switched from electronic D-Jetronic to mechanical K-Jetronic injection. In 1974 the number of bolts holding the flywheel increased from 6 to 8 and the size of the connecting rods was increased. From 1975 the thread standard changed from SAE to Metric as Volvo switched over with the new 200 series. The B20A was revived for four years for use in the C202 from 1977 to 1981. B30{{main|Volvo B30 engine}}From the 1969 model year Volvo produced a six-cylinder version of this engine called the B30 for the newly released Volvo 164. Adding two extra cylinders with the same dimensions to the B20 produced a {{convert|2979|cc|L cuin|1|order=flip|abbr=on|adj=on}} engine. See also
References{{Commons category|Volvo B18 engine}}{{Commons category||Volvo B20 engine}}1. ^1 {{cite web |last=Neff |first=John |date=26 October 2007 |url=https://www.autoblog.com/2007/10/26/man-with-2-6-million-mile-volvo-p1800-aims-for-3-million/ |title=Man with 2.6 million-mile Volvo P1800 aims for 3 million |website=www.autoblog.com}} [1][2][3][4][5][6][7][8][9]2. ^1 {{cite magazine |last=LaChance |first=David |date=July 2007 |title=Volvo B18 |url=https://www.hemmings.com/magazine/hmn/2007/07/Volvo-B18/1484999.html |magazine=Hemmings Motor News |location= |publisher= |access-date=17 January 2019 }} 3. ^1 {{cite web|url=https://www.aef.se/FHT-dokument/Spaningsradar_PS15.pdf |title=Spaningsradar PS-15 - Historik, Erfarenheter |date=4 August 1999 |last=Gardh |first=Karl |trans-title=Surveillance Radar PS-15 - History, Experiences |language=swedish |format=pdf }} 4. ^1 {{ cite web |url=http://www.dep-o.co.uk/tech/classic-volvo-dohc-16-valve-conversion/ |last=Charlesworth |first=Simon |date=27 January 2014 |title=Classic Volvo DOHC 16-valve Conversion |website=www.dep-o.co.uk }} 5. ^1 {{ cite web |url=http://www.thebusinessdesk.com/westmidlands/news/570863-grainger-amp-worrall-works-with-swedish-designers-on-new-engines-for-classic-volvos |last=Tift |first=Duncan |date=29 January 2014 |title=Grainger & Worrall works with Swedish designers on new engines for classic Volvos |website=www.thebusinessdesk.com }} 6. ^1 {{ cite web |url=http://www.gwcast.com/en/2014/01/01/new-cylinder-head-historic-volvo-range/ |last= |first= |date=1 January 2014 |title=New cylinder head for historic Volvo range… |website= }} 7. ^1 {{cite book |last=Dredge |first=Richard |date=23 May 2016 |title=Volvo Amazon: The Complete Story |url= |location= |publisher=The Crowood Press UK |page= |isbn=978-1785001048 |author-link= }} 8. ^1 {{cite web |url=http://www.leopardmotor.com/volvo_b_36_v8.htm |title=Volvo B 36 V8 |last=Aamodt |first=Hans-Petter |date= |language=Norwegian |website=www.leopardmotor.com }} 9. ^1 {{cite web |url=https://ateupwithmotor.com/model-histories/volvo-p1800-history/2/ |title=Sainted Swede: The Volvo P1800 and 1800ES |last=Severson |first=Aaron |date=2 September 2011 |website=ateupwithmotor.com }} }}{{clear}} External links
3 : Volvo engines|Gasoline engines by model|Inline-four engines |
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