SDI (engine)
{{Short description|Type of diesel engine}}
{{Use dmy dates|date=June 2020}}
The SDI engine is a design of naturally aspirated (NA) direct injection diesel engine developed and produced by Volkswagen Group for use in cars and vans, along with marine engine (Volkswagen Marine){{cite web|url=http://www.vw-m.de/index.php?id=6&L=1|title=Volkswagen Marine > Engines <|publisher=Volkswagen Group|work=Volkswagen.de|year=2009|access-date=4 November 2009|archive-url=https://web.archive.org/web/20110719113053/http://www.vw-m.de/index.php?id=6&L=1|archive-date=19 July 2011}}{{cite web|url=http://www.vw-m.de/download.php?d=uploads/vwm/Self-study_programme_061214999999.pdf|title=Boat engines from Volkswagen Marine – Self-study programme M001 – Design and function|publisher=Volkswagen Group|work=Volkswagen Marine|date=April 2001|access-date=18 February 2010|archive-url=https://web.archive.org/web/20110719113107/http://www.vw-m.de/download.php?d=uploads%2Fvwm%2FSelf-study_programme_061214999999.pdf|archive-date=19 July 2011}} and Volkswagen Industrial Motor{{citation|url=http://www.mi-uk.com/products/engines/downloads/sdi19industrial.pdf|title=The SDI 1.9 Industrial Engine|publisher=Volkswagen AG|work=mi-uk.com|date=March 2005|access-date=4 November 2009|archive-url=https://web.archive.org/web/20110714082530/http://www.mi-uk.com/products/engines/downloads/sdi19industrial.pdf|archive-date=14 July 2011}} applications.
The SDI brand name (derived from "Suction Diesel Injection" or "Suction Diesel Direct Injection", the latter a literal translation of the {{langx|de|Saugdiesel-Direkteinspritzung}}){{citation|title=Volkswagen Caddy owners manual, RHD models|work=Volkswagen AG|year=2000}}{{cite book|author=Max Bohner |author2=Richard Fischer |author3=Rolf Gscheidle |title=Fachkunde Kraftfahrzeugtechnik|edition=27|publisher=Europa-Lehrmittel |publication-place=Haan-Gruiten|year=2001|language=de|ISBN=3-8085-2067-1}}{{cite web|url=http://www.sgpetch.co.uk/pages/motability/abbreviations|title=Abbreviations|publisher=SG Petch Ltd (SEAT franchised dealer)|work=SGPetch.co.uk|access-date=17 December 2009|archive-url=https://web.archive.org/web/20101129114205/http://sgpetch.co.uk/pages/motability/abbreviations|archive-date=29 November 2010}} was adopted in order to differentiate between earlier and less efficient indirect injection engines, called SD or "Suction Diesel", which were also produced by Volkswagen Group.
SDI engines are only produced in inline or straight engine configurations; and as they originate from a German manufacture, are designated as either R4 or R5, taken from the {{langx|de|Reihenmotor}}. They are available in various displacements (from 1.7 to 2.5 litres), in inline-four (R4 or I4) and inline-five (R5 or I5), in various states of tune, depending on intended application.
The SDI engine is generally utilised in applications where reliability and fuel economy are of primary concern. These engines lack any type of forced induction, hence the use of 'suction' in the title, and their power output is lower than a turbocharged engine of similar displacement. For example, the 2.0 SDI engine fitted to the Volkswagen Golf Mk5 has a peak power output of {{convert|55|kW|PS bhp|0}}; whereas the same engine in Turbocharged Direct Injection (TDI) form is rated at {{convert|103|kW|PS bhp|0}} or {{convert|125|kW|PS bhp|0}}, depending on specifications.
SDI engines and applications
:Notes: Volkswagen Marine engines were originally rated according to Directive 80/1269/ EEC. However, some are now being rated to ISO 8178-4.{{citation needed|date=March 2010}}
==Lubricants==
Like their related Volkswagen Group Turbocharged Direct Injection diesel engines, Volkswagen AG requires that motor oil lubricants for SDI engines must conform to one of the officially approved standards VW505.00, 505.01, 506.00, 506.01, or 507.00.{{cite web|title=Volkswagen oil specifications|url=http://www.oilspecifications.org/volkswagen.php|work=OilSpecifications.org|access-date=19 February 2010}}{{Failed verification|date=June 2022|reason=Source (accessed 2020!) gives uses for each oil, but does not specifically mention SDI.}} 'Generic' oil standards such as the American Petroleum Institute 'API',{{cite web|title=American Petroleum Institute|url=http://www.oilspecifications.org/api.php|work=OilSpecifications.org|access-date=19 February 2010}} or European Automobile Manufacturers Association 'ACEA'{{cite web|title=ACEA engine oil sequences|url=http://www.oilspecifications.org/acea.php|work=OilSpecifications.org|access-date=19 February 2010}} are not in themselves recognised or approved by VW, although such an oil may also conform to one of the specific VW standards.
Many formulations of motor oils from most brands are now "VW Approved" to the above standards. However some unapproved 'off brands' print the VW number on the label, implying that they meet the said standard, but hide in small type the word "recommended".{{citation needed|date=February 2010}} Only Volkswagen AG can grant the necessary approvals, following in-house testing.{{citation needed|date=February 2010}} Volkswagen Germany (and Volkswagen of America) publish up-to-date lists of currently approved oils on their respective websites, along with the technical resource, erWin.{{cite web|title=Approved oils – from erWin online|url=https://erwin.volkswagen.de/erwin/showApprovedOils.do|publisher=Volkswagen AG|work=erWin.Volkswagen.de|access-date=19 February 2010}} {{registration required}}
All SDI-engined models with "LongLife Servicing", "Extended Service Intervals", "ESI", or "WIV", must be lubricated by official 'LongLife' lubricants, namely VW506.00 (for non-PD), VW506.01 (for PD), or VW507.00. According to VW 'generic' longlife lubricants, or those certified by other manufacturers such as General Motors,{{cite web|title=General Motors oil specifications|url=http://www.oilspecifications.org/general_motors_gm.php|work=OilSpecifications.org|access-date=19 February 2010}} BMW{{cite web|title=BMW oil specifications|url=http://www.oilspecifications.org/bmw.php|work=OilSpecifications.org|access-date=19 February 2010}} or Mercedes-Benz{{cite web|title=Mercedes oil specifications|url=http://www.oilspecifications.org/mercedes_mb.php|work=OilSpecifications.org|access-date=19 February 2010}} should not be used.
==SDI vs other VW Group diesel engines==
The following table contains a selection of current and historical Volkswagen Group compression-ignition SDI diesel engines for comparison of performance and operating characteristics with other naturally aspirated and forced induction engines of the same capacity:
{{expand section|MEP, max operating revs, dates|date=August 2009}}
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!engine | ||||||||||||
| align='left'|{{nowrap|1.4 SD}} | {{convert|1391|cc|1|abbr=on}} | inline 4, indirect injection mechanical distributor injection pump | 8v SOHC | 35 (48) | 4,500 | 82 (60) | 2,700 – 3,500 | 25.2 (34.5) | 5,000 | Polo 2, 2F late 1980s - early 1990s | ||
| align='left'|{{nowrap|1.4 TDI}} | {{convert|1422|cc|1|abbr=on}} | inline 3, turbo direct injection mechanically pressurised, electrically triggered pumpe-duse unit injectors | 12v SOHC | 59 (80) | 4,000 | 195 (144) | 2,200 | 41.5 (56.3) | Polo Bluemotion, first generation 2006 - 2010 | |||
| align='left'|{{nowrap|1.7 D}} | {{convert|1716|cc|1|abbr=on}} | inline 4, indirect injection mechanical distributor injection pump | 8v SOHC | 42 (57) | 4,500 | 103 (76) | 2,800 | 24.5 (33.2) | 10/1986- 05/1992 | |||
| align='left'|{{nowrap|1.7 SDI}} | {{convert|1716|cc|1|abbr=on}} | inline 4, direct injection electronic distributor injection pump | 8v SOHC | 44 (60) | 4,200 | 115 (85) | 2,200 | 25.6 (35.0) | 07/1996- 07/2005 | |||
| align='left'|{{nowrap|1.9 D}} | {{convert|1896|cc|1|abbr=on}} | inline 4, indirect injection mechanical distributor injection pump | 8v SOHC | 47 (64) | 4,300 | 124 (91) | 2,500- 3,200 | 24.8 (33.8) | ||||
| align='left'|{{nowrap|1.9 SD}} | {{convert|1896|cc|1|abbr=on}} | inline 4, indirect injection electronic distributor injection pump | 8v SOHC | 36 (49) | 3,000 | 121 (89) | 1,800 | 19.0 (25.8) | current (Industrial) | |||
| align='left'|{{nowrap|1.9 SDI}} | {{convert|1896|cc|1|abbr=on}} | inline 4, direct injection electronic distributor injection pump | 8v SOHC | 50 (68) | 4,000 | 133 (98) | 1,800 | 26.4 (35.9) | current | |||
| align='left'|{{nowrap|1.9 TD}} | {{convert|1896|cc|1|abbr=on}} | inline 4, indirect injection mechanical distributor injection pump | 8v SOHC | 55 (75) | 4,200 | 150 (111) | 2,000 | 29.0 (39.6) | ||||
| align='left'|{{nowrap|1.9 TDI}} | {{convert|1896|cc|1|abbr=on}} | inline 4, direct injection electronic distributor injection pump | 8v SOHC | 66 (90) | 3,750 | 210 (155) | 1,900 | 34.8 (47.5) | ||||
| align='left'|{{nowrap|1.9 TDI PD}} | {{convert|1896|cc|1|abbr=on}} | inline 4, direct injection Pumpe Düse (PD) Unit Injector | 8v SOHC | 96 (131) | 4,000 | 310 (229) | 1,900 | 50.6 (69.1) | current | |||
| align='left'|{{nowrap|2.0 SDI PD}} | {{convert|1968|cc|1|abbr=on}} | inline 4, direct injection Pumpe Düse (PD) Unit Injector | 8v SOHC | 55 (75) | 4,200 | 140 (103) | 2,400 | 27.9 (38.1) | current | |||
| align='left'|{{nowrap|2.0 TDI PD}} 140 PS | {{convert|1968|cc|1|abbr=on}} | inline 4, direct injection Pumpe Düse (PD) Unit Injector | 8v SOHC | 103 (140) | 4,000 | 320 (236) | 1,800 | 52.3 (71.1) | 20.43 | 15.70 | current | |
| align='left'|{{nowrap|2.0 TDI PD 16v}} 170 PS | {{convert|1968|cc|1|abbr=on}} | inline 4, direct injection Pumpe Düse (PD) Unit Injector | 16v DOHC | 125 (170) | 4,200 | 350 (258) | 1,800- 2,500 | 63.5 (86.4) | current | |||
| align='left'|{{nowrap|2.0 TDI CR 16v}} 170 PS | {{convert|1968|cc|1|abbr=on}} | inline 4, direct injection common rail (CR) | 16v DOHC | 125 (170) | 4,200 | 350 (258) | 1,750- 2,500 | 63.5 (86.4) | current | |||
| align='left'|{{nowrap|2.5 R5 SDI}} 75 PS | {{convert|2461|cc|1|abbr=on}} | inline 5, direct injection electronic distributor injection pump | 10v SOHC | 55 (75) | 3,600 | 155 (114) | 2,250 | 22.3 (30.5) | 02/2002- current | |||
| align='left'|{{nowrap|2.5 R5 TDI CR}} 163 PS | {{convert|2461|cc|1|abbr=on}} | inline 5, direct injection common rail (CR) | 10v SOHC | 120 (163) | 3,500 | 350 (258) | 2,000 | 48.8 (66.3) | current | |||
| align='left'|{{nowrap|2.5 R5 TDI PD}} 174 PS | {{convert|2461|cc|1|abbr=on}} | inline 5, direct injection Pumpe Düse (PD) Unit Injector | 10v SOHC | 128 (174) | 3,500 | 400 (295) | 2,000 | 52.0 (70.7) | 20.43 | 17.84 | current | |
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!engine |
References
{{Reflist}}
External links
- [http://www.volkswagenag.com/ VolkswagenAG.com] – Volkswagen Group corporate website
- [https://web.archive.org/web/20100327032409/http://www.volkswagen.com/vwcms/master_public/virtualmaster/en2/unternehmen/mobility_and_sustainability0/regionen/Europa/Polkowice.html Polkowice (Poland) Plant Sustainability site – engine plant]
{{Volkswagen Group brands}}
Category:Volkswagen Group diesel engines
Category:Diesel engines by model
Category:Diesel engine technology
Category:Straight-four engines