Type of diesel 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 literal translation of the
German
:
Saugdiesel-Direkteinspritzung
)
[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 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 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 specifications.
SDI engines and applications
[
edit
]
SDI engines: specifications, performance and applications
[7]
[8]
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
,
?koda Octavia
(Mk1),
?koda Fabia
,
Volkswagen Bora
(some markets)
,
Volkswagen Jetta King
,
Volkswagen Jetta Pioneer
|
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 Leon Mk1 (1M)
,
?koda 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 Duse
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 Duse
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 LT
28 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
[
edit
]
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.
[14]
[
failed verification
]
'Generic' oil standards such as the
American Petroleum Institute
'API',
[15]
or
European Automobile Manufacturers Association
'ACEA'
[16]
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
]
Only Volkswagen AG can grant the necessary approvals, following in-house testing.
[
citation needed
]
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.
[17]
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.
[14]
According to VW 'generic' longlife lubricants, or those certified by other manufacturers such as
General Motors
,
[18]
BMW
[19]
or
Mercedes-Benz
[20]
should not be used.
SDI vs other VW Group diesel engines
[
edit
]
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:
| This section
needs expansion
with:
MEP
, max operating revs, dates. You can help by
adding to it
.
(
August 2009
)
|
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 Duse (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 Duse (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 Duse (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 Duse (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 Duse (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
rpm
|
dates
installed
|
References
[
edit
]
External links
[
edit
]
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