Crank Angle Encoder

7/27/2019 Crank Angle Encoder

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0 0 0 - 3 6 6 e - 0 4 . 0

2

( D B 1 9 .

2 6 1 3 B e )

Kistler Instrumente AG, PO Box, CH-8408 Winterthur

Tel +41 52-224 11 11, Fax 224 14 14, [email protected], www.kistler.com

This information corresponds to the current state of knowledge. Kistler reserves

the right to make technical changes. Liability for consequential damage resul-

ting from the use of Kistler products is excluded.

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™

Crank Angle Encoder

Page 1/4

Technical Data

TTL crank angle signal

Resolution º 0,1 ... 6

Dynamic accuracy

at 10'000 rpm

(signal delay) º +0,02

TTL trigger signal (TRG)

Resolution º 0,1 ... 6

Speed range rpm 1 ... 20'000

Operating temperature range

Encoder and amplifier ºC -30 ... 60Connection flange ºC -30 ... 100

Power supply

with stabilized voltage V DC 5 ±0,25

Current consumption mA 200

with unstablilized voltage V DC 6 ... 24

Current consumption mA 200 ... 400

Mounting diameter

of encoder mm 69

Encoder weight g 460

Amplifier dimensions mm 98x64x37

Amplifier weight g 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 regula-

ted in order to compensate for any soiling. The disk and the

photoelectric cell are encased in a dustproof housing.

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 suppliesone TTL-compatible output signal each for the trigger marker

and angle markers (Fig. 2).

The line terminator contains a circuit, which protects the sig-

nal 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.

Accessories – XEV

Type 2613B...



0 0 0 - 3 6 6 e - 0 4 . 0

2

( D B 1 9 . 2

6 1 3 B e )

Crank Angle Encoder, Type 2613B...


Tel +41 52-224 11 11, Fax 224 14 14, [email protected], www.kistler.com

This information corresponds to the current state of knowledge. Kistler reserves

the right to make technical changes. Liability for consequential damage resul-

ting from the use of Kistler products is excluded.

Page 2/4

The required resolution of the crank angle signal is set by DIL-

switches 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 appli-

cations 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.

Application

The crank angle encoder is used wherever motor angle and

flow information is needed, especially for calculating IMEPand 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 flan-

ge (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 measu-

rements, the TDC position is determined as the angle bet-

ween 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



0 0 0 - 3 6 6 e - 0 4 . 0

2

( D B 1 9 . 2

6 1 3 B e )


Tel +41 52-224 11 11, Fax 224 14 14, [email protected], www.kistler.comThis information corresponds to the current state of knowledge. Kistler reser-

ves the right to make technical changes. Liability for consequential damage

resulting from the use of Kistler products is excluded.

Page 3/4


Fig. 3 Shielding

Fig. 2 Signals



0 0 0 - 3 6 6 e - 0 4 . 0

2

( D B 1 9 . 2

6 1 3 B e )


Tel +41 52-224 11 11, Fax 224 14 14, [email protected], www.kistler.comThis information corresponds to the current state of knowledge. Kistler reser-

ves the right to make technical changes. Liability for consequential damage

resulting from the use of Kistler products is excluded.

Page 4/4


Accessories Type

Remote control unit 2613B5

AVL adapter cable 2613B6

Scope of delivery Type

Crank angle encoder 2613B1

Signal conditioner 2613B2

Connecting cable 10 m 2613B3

Line terminator 2613B4

Centring disk 5.015.063

Connecting rod 5.015.057

6x6hex. screw M5 x 10 6.140.049

6x6hex. screw M6 x 10 6.140.050

Fixing disk M5 6.230.082

Fixing disk M6 6.230.085

Fork wrench SW8/10 5.210.370

Hex. key SW2 5.210.371

Hex. key SW2,5 5.210.120

Female cable connector 5.511.320

(2-pin, 680 series) (Cable Ø 6-8 mm)

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Crank Angle Encoder