SDI (engine)
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)[1][2] and Volkswagen Industrial Motor[3] applications.
The SDI brand name (derived from "Suction Diesel Injection" or "Suction Diesel Direct Injection", the latter a translation of the German: Saugdiesel Direkt Einspritzung)[4][5][6] was adopted in order to differentiate between earlier and less efficient indirect injection engines, called SD[4] 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 German: 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 as such, their power output is lower when compared with a similar displacement turbocharged engine. For example, the 2.0 SDI engine fitted to the Volkswagen Golf Mk5 has a peak power output of 55 kilowatts (75 PS; 74 bhp); whereas the same engine in Turbocharged Direct Injection (TDI) form is rated at 103 kilowatts (140 PS; 138 bhp) or 125 kilowatts (170 PS; 168 bhp), depending on specification.
Contents
SDI engines and applications
model | designation or ID code(s) |
engine displacement |
peak power at rpm (Directive 80/1269/EEC) |
max. torque at rpm |
notable design features |
notes & application(s) |
---|---|---|---|---|---|---|
automotive engines | ||||||
1.7 SDI | AHB, AHG, AKU, AKW | 1,716 cubic centimetres (104.7 cu in) | 44 kW (60 PS; 59 bhp) @ 4,200 | 115 N⋅m (85 lbf⋅ft) @ 2,200 |
Bosch VP37 (German: VerteilerPumpe) electronic distributor injection pump | Volkswagen Lupo, SEAT Arosa, Volkswagen Polo (some markets), Volkswagen Caddy Typ 9K |
1.9 SDI | ASY, AEY, AGD | 1,896 cubic centimetres (115.7 cu in) | 47 kW (64 PS; 63 bhp) @ 4,200 | 125 N⋅m (92 lbf⋅ft) @ 1,600-2,800 |
Bosch VP37 (VerteilerPumpe) electronic distributor injection pump | Volkswagen Polo Mk3, Volkswagen Polo Classic, Volkswagen Golf Mk3, Volkswagen Caddy Typ 9U/9K, SEAT Inca, Škoda Octavia (Mk1), Škoda Fabia, Volkswagen Bora (some markets) |
1.9 SDI | AGP, AQM | 1,896 cubic centimetres (115.7 cu in) | 50 kW (68 PS; 67 bhp) @ 4,000 | 133 N⋅m (98 lbf⋅ft) @ 1,800 |
Bosch VP37 (VerteilerPumpe) electronic distributor injection pump | Volkswagen Polo Mk3, Volkswagen Golf Mk4, Volkswagen Caddy Typ 9U/9K, SEAT Ibiza, SEAT Inca, SEAT León Mk1 (1M), Škoda Octavia (Mk1) Volkswagen Bora (some markets) |
2.0 SDI PD | BDJ, BST | 1,968 cubic centimetres (120.1 cu in) | 51 kW (69 PS; 68 bhp) @ 4,200 | 140 N⋅m (103 lbf⋅ft) @ 2,200-2,400 |
Bosch Pumpe Düse technology |
Volkswagen Caddy Typ 2K |
2.0 SDI PD | BDK | 1,968 cubic centimetres (120.1 cu in) | 55 kW (75 PS; 74 bhp) @ 4,200 | 140 N⋅m (103 lbf⋅ft) @ 2,200-2,400 |
Bosch Pumpe Düse technology |
Volkswagen Golf Mk5 |
2.5 R5 SDI | AGX | 2,461 cubic centimetres (150.2 cu in) | 55 kW (75 PS; 74 bhp) | 160 N⋅m (118 lbf⋅ft) | Inline-five engine, Bosch VP37 (VerteilerPumpe) electronic distributor injection pump | Volkswagen LT28 and LT35 vans (05/96-04/01) |
marine engines | ||||||
1.9 SDI [1] |
SDI 40-4,[9] SDI 50-4,[10] SDI 60-4[11] |
1,896 cubic centimetres (115.7 cu in) | 29 kW (39 PS; 39 bhp) @ 2,600 / 37 kW (50 PS; 50 bhp) @ 3,000 / 44 kW (60 PS; 59 bhp) @ 3,600 |
126 N⋅m (93 lbf⋅ft) @ 2,000 / 130 N⋅m (96 lbf⋅ft) @ 2,000 / 129 N⋅m (95 lbf⋅ft) @ 2,000 |
Bosch VP37 (VerteilerPumpe) electronic distributor injection pump | Small motor cruisers. Optional connection for heater core or hot water preparation for use in sailboats |
2.5 R5 SDI [1][2] |
SDI 55-5,[12] SDI 75-5[13] |
2,461 cubic centimetres (150.2 cu in) | 40 kW (54 PS; 54 bhp) @ 2,500 / 55 kW (75 PS; 74 bhp) @ 3,600 |
155 N⋅m (114 lbf⋅ft) @ 2,250 |
Inline-five engine, Bosch VP37 (VerteilerPumpe) electronic distributor injection pump | Yachts and motor cruisers |
industrial engines (80/1269/EEC-rated) | ||||||
1.9 SDI |
430/BXT | 1,896 cubic centimetres (115.7 cu in) | 30 kW (41 PS; 40 bhp) | Bosch VP37 (VerteilerPumpe) electronic distributor injection pump | Volkswagen Industrial Motor | |
1.9 SDI [3] |
444 | 1,896 cubic centimetres (115.7 cu in) | 44 kW (60 PS; 59 bhp) @ 3,600 | 130 N⋅m (96 lbf⋅ft) @ 2,200 |
Bosch VP37 (VerteilerPumpe) electronic distributor injection pump | Volkswagen Industrial Motor |
- 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]
Lubricants
Like their related Volkswagen Group Turbocharged Direct Injection diesel engines, Volkswagen AG requires that motor oil lubricants for SDI engines must only meet VW505.00, 505.01, 506.00, 506.01, or 507.00 officially approved standards.[14] 'Generic' oil standards such as the American Petroleum Institute 'API',[15] or European Automobile Manufacturers Association 'ACEA'[16] are not recognised, nor approved by VW - so oils bearing these generic approvals must not be used, except when the oil has also been granted one of the specific VW approvals.
Many formulations of motor oils from most brands are now "VW Approved" to the above standards. However, there does exist a few unapproved 'off brands' that print the VW number on the label, effectively 'claiming' to meet the said standard, but hide in small type the word "recommended".[citation needed] Volkswagen AG only carries out in-house testing on motor oils to grant the necessary approvals; if Volkswagen AG, therefore, has not carried out such tests (or if a submitted oil has failed their tests), Volkswagen AG will not grant approval.[citation needed] Volkswagen Germany (and Volkswagen of America) freely publish up-to-date lists of currently approved oils on their respective websites, along with the technical resource, erWin.[17] Volkswagen AG does not permit any independent testing facility to grant their own VW standards.
All SDI-engined models with "LongLife Servicing", "Extended Service Intervals", "ESI", or "WIV", must be run on official 'LongLife' lubricants, namely VW506.00 (for non-PD), VW506.01 (for PD), or the very latest VW507.00.[14] Again, other 'generic' longlife lubricants (or those longlife standards granted by other manufacturers such as General Motors,[18] BMW[19] or Mercedes-Benz[20]) should not be used, unless they also have the official relevant VW LongLife approval.
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: Lua error in package.lua at line 80: module 'strict' not found.
engine model |
engine displacement |
engine configuration & diesel fuel system |
valvetrain | max. power: kW (PS) |
rpm for max. power |
max. torque: Nm (ft·lbf) |
rpm for max. torque |
specific power: kW/L (PS/L) |
max MEP: bar |
MEP @ max. power: bar |
max operating revs: rpm |
dates installed |
---|---|---|---|---|---|---|---|---|---|---|---|---|
1.4 SD | 1,391 cc (84.9 cu in) | 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 |
||
1.4 TDI | 1,422 cc (86.8 cu in) | 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 |
|||
1.7 D | 1,716 cc (104.7 cu in) | 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 |
|||
1.7 SDI | 1,716 cc (104.7 cu in) | 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 |
|||
1.9 D | 1,896 cc (115.7 cu in) | inline 4, indirect injection mechanical distributor injection pump |
8v SOHC |
47 (64) |
4,300 | 124 (91) |
2,500- 3,200 |
24.8 (33.8) |
||||
1.9 SD | 1,896 cc (115.7 cu in) | inline 4, indirect injection electronic distributor injection pump |
8v SOHC |
36 (49) |
3,000 | 121 (89) |
1,800 | 19.0 (25.8) |
current (Industrial) |
|||
1.9 SDI | 1,896 cc (115.7 cu in) | inline 4, direct injection electronic distributor injection pump |
8v SOHC |
50 (68) |
4,000 | 133 (98) |
1,800 | 26.4 (35.9) |
current | |||
1.9 TD | 1,896 cc (115.7 cu in) | inline 4, indirect injection mechanical distributor injection pump |
8v SOHC |
55 (75) |
4,200 | 150 (111) |
2,000 | 29.0 (39.6) |
||||
1.9 TDI | 1,896 cc (115.7 cu in) | inline 4, direct injection electronic distributor injection pump |
8v SOHC |
66 (90) |
3,750 | 210 (155) |
1,900 | 34.8 (47.5) |
||||
1.9 TDI PD | 1,896 cc (115.7 cu in) | inline 4, direct injection Pumpe Düse (PD) Unit Injector |
8v SOHC |
96 (131) |
4,000 | 310 (229) |
1,900 | 50.6 (69.1) |
current | |||
2.0 SDI PD | 1,968 cc (120.1 cu in) | inline 4, direct injection Pumpe Düse (PD) Unit Injector |
8v SOHC |
55 (75) |
4,200 | 140 (103) |
2,400 | 27.9 (38.1) |
current | |||
2.0 TDI PD 140 PS |
1,968 cc (120.1 cu in) | 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 | |
2.0 TDI PD 16v 170 PS |
1,968 cc (120.1 cu in) | 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 | |||
2.0 TDI CR 16v 170 PS |
1,968 cc (120.1 cu in) | inline 4, direct injection common rail (CR) |
16v DOHC |
125 (170) |
4,200 | 350 (258) |
1,750- 2,500 |
63.5 (86.4) |
current | |||
2.5 R5 SDI 75 PS |
2,461 cc (150.2 cu in) | 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 |
|||
2.5 R5 TDI CR 163 PS |
2,461 cc (150.2 cu in) | inline 5, direct injection common rail (CR) |
10v SOHC |
120 (163) |
3,500 | 350 (258) |
2,000 | 48.8 (66.3) |
current | |||
2.5 R5 TDI PD 174 PS |
2,461 cc (150.2 cu in) | 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 | |
engine model |
engine displacement |
engine configuration & diesel fuel system |
valvetrain | max. power: kW (PS) |
rpm for max. power |
max. torque: Nm (ft·lbf) |
rpm for max. torque |
specific power: kW/L (PS/L) |
max MEP: bar |
MEP @ max. power: bar |
max operating revs: rpm |
dates installed |
References
- ↑ 1.0 1.1 1.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 2.0 2.1 Lua error in package.lua at line 80: module 'strict' not found.
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- ↑ 4.0 4.1 Lua error in package.lua at line 80: module 'strict' not found.
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- ↑ 14.0 14.1 Lua error in package.lua at line 80: module 'strict' not found.
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External links
Wikimedia Commons has media related to Volkswagen Group engines. |
- VolkswagenAG.com - Volkswagen Group corporate website
- Polkowice (Poland) Plant Sustainability site - engine plant
- Pages with login required references or sources
- Articles containing German-language text
- Articles with unsourced statements from March 2010
- Articles with unsourced statements from February 2010
- Articles using small message boxes
- Commons category link is locally defined
- Use dmy dates from January 2011
- Volkswagen Group diesel engines
- Diesel engines by model
- Engine fuel system technology
- Fuel injection systems
- Marine diesel engines