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Crank Angle Encoder
The crank angle encoder type 2613B provides the basis for all
crank-angle-related measurements of internal combustion
engines. It consists of an angle encoder, a signal conditioner
and a line terminator. It generates 3 TTL rectangular-pulse
signals: A crank angle signal with adjustable resolution
(0,1°...6°), a crank-angle-related trigger signal, and another
crank angle signal with fixed resolution (1°), which can be
used for the engine management system or the engine speed
at the test bench. The crank angle encoder is suitable for use
together with most engine indicating systems.
• speed range 1 ... 20’000 rpm
• very rugged, resists high mechanical loading
• conforming to ™
Type 2613B...
Technical Data
TTL crank angle signal
Resolution
Dynamic accuracy
at 10'000 rpm
(signal delay)
TTL trigger signal (TRG)
Resolution
Speed range
Operating temperature range
Encoder and amplifier
Connection flange
Power supply
with stabilized voltage
Current consumption
with unstablilized voltage
Current consumption
Mounting diameter
of encoder
Encoder weight
Amplifier dimensions
Amplifier weight
º
0,1 ... 6
º
+0,02
º
rpm
0,1 ... 6
1 ... 20'000
ºC
ºC
-30 ... 60
-30 ... 100
V DC
mA
V DC
mA
5 ±0,25
200
6 ... 24
200 ... 400
mm
g
mm
g
69
460
98x64x37
300
Description
The crank angle encoder contains a precision marker disk with
a trigger mark and 360 angle marks which are scanned by a
transmission photoelectric cell. Their light intensity is regulated in order to compensate for any soiling. The disk and the
photoelectric cell are encased in a dustproof housing.
000-366e-04.02 (DB19.2613Be)
With its wide speed range of 1 ... 20’000 rpm the encoder can
be used on a large variety of engines. Even 1 rpm of the
crankshaft can be measured correctly.
The separate amplifier is connected by means of a 1,5 m long
cable. It is powered by a 5 VDC power supply and supplies
one TTL-compatible output signal each for the trigger marker
and angle markers (Fig. 2).
The line terminator contains a circuit, which protects the signal and generates an additional crank angle signal with fixed
resolution, which can be used for the engine management
system or the engine speed at the test bench.
Page 1/4
This information corresponds to the current state of knowledge. Kistler reserves
the right to make technical changes. Liability for consequential damage resulting from the use of Kistler products is excluded.
Kistler Instrumente AG, PO Box, CH-8408 Winterthur
Tel +41 52-224 11 11, Fax 224 14 14, [email protected], www.kistler.com
Crank Angle Encoder, Type 2613B...
The required resolution of the crank angle signal is set by DILswitches in the signal conditioner. If required the resolution
can also be set by the remote-control-unit type 2613B5
(accessories).
The cable, the amplifier and the line terminator are shielded in
order to reduce electromagnetic sensitivity (Fig. 3)
The Type 2613B crank angle encoder is ideal for many applications owing to its compact measurements and extended
speed range. An important feature is the simple replaceability
of the cable with its sensor. The device is compatible to AVL
measuring chains.
000-366e-04.02 (DB19.2613Be)
Application
The crank angle encoder is used wherever motor angle and
flow information is needed, especially for calculating IMEP
and heat release. An extremely exact alignment (ca. 0,1°) of
top dead centre of each cylinder to the trigger signal of the
encoder is decisive for precise indication (TDC determination).
Installation
The crank angle encoder should be mounted directly on the
free end of the crankshaft, insofar as this is possible.
Consequently, the free end must be fitted with a 6-hole flange (Fig. 1). Mounting the crank angle encoder to a shaft
downstream of the crankshaft may lead to errors as the result
of play or torsional movement. In addition, the encoder must
be precisely centred in order to prevent vibration.
The encoder can be mounted at any angle. The encoder
housing is then attached to a rigid part of the engine via the
securing arm and positioning rod. Prior to a series of measurements, the TDC position is determined as the angle between the trigger marker of the encoder and the physical TDC
of the cylinder to be measured. Two common methods are
either employing the capacitive TDC encoder or by pressure
measurement in the motored engine.
If ground-isolated installation of the amplifier is desired, then
it has to be mounted using an isolating plate.
Fig. 1 System overview
Page 2/4
This information corresponds to the current state of knowledge. Kistler reserves
the right to make technical changes. Liability for consequential damage resulting from the use of Kistler products is excluded.
Kistler Instrumente AG, PO Box, CH-8408 Winterthur
Tel +41 52-224 11 11, Fax 224 14 14, [email protected], www.kistler.com
Crank Angle Encoder, Type 2613B...
000-366e-04.02 (DB19.2613Be)
Fig. 2 Signals
Fig. 3 Shielding
Page 3/4
This information corresponds to the current state of knowledge. Kistler reserves the right to make technical changes. Liability for consequential damage
resulting from the use of Kistler products is excluded.
Kistler Instrumente AG, PO Box, CH-8408 Winterthur
Tel +41 52-224 11 11, Fax 224 14 14, [email protected], www.kistler.com
Crank Angle Encoder, Type 2613B...
10 m
M5 x 10
M6 x 10
M5
M6
SW8/10
SW2
SW2,5
Type
2613B1
2613B2
2613B3
2613B4
5.015.063
5.015.057
6.140.049
6.140.050
6.230.082
6.230.085
5.210.370
5.210.371
5.210.120
5.511.320
Accessories
Remote control unit
AVL adapter cable
Type
2613B5
2613B6
mm)
000-366e-04.02 (DB19.2613Be)
Scope of delivery
Crank angle encoder
Signal conditioner
Connecting cable
Line terminator
Centring disk
Connecting rod
6x6hex. screw
6x6hex. screw
Fixing disk
Fixing disk
Fork wrench
Hex. key
Hex. key
Female cable connector
(2-pin, 680 series) (Cable Ø 6-8
Page 4/4
This information corresponds to the current state of knowledge. Kistler reserves the right to make technical changes. Liability for consequential damage
resulting from the use of Kistler products is excluded.
Kistler Instrumente AG, PO Box, CH-8408 Winterthur
Tel +41 52-224 11 11, Fax 224 14 14, [email protected], www.kistler.com