Qsm11-E.pdf

Coolant Temperature Sensor for:Engine protection... Gauge pressure Atmosferic pressure = referenceVented by hole in sensor or wiring... 3 Wired Pressure Sensors Capacitance Disk Pressure

Electronics

Why Electronic System?

ECM Connections.

12 of 24 volt

ECM supplied by switched &

unswitched circuit

Unswitched direct to ECM with no other connections to the harness

No switches between keyswitch & ECM pinout

Master Disconnect in Positive Site not in Unswicthed Connection or

Inputs

&

Outputs.

Input Sensors & Switches

Processing

Output: Example: S.D.V., Timing & Metering Injector

Sensoren

en Actuatoren?

Sensoren

Speed Sensors

2 Different Types

Variable Reluctance (Inductive).

Hall effect

Position Sensors.

Throttle Position Sensor

Temperature sensors.

Resistor is NTC

Coolant Temperature Sensor for:

Engine protection.

Intake Manifold Temperature.

Pressure sensors.

Gauge pressure Atmosferic pressure = reference

Vented by hole in sensor or wiring

Absolute Pressure.

Near Vacuum on One Side Reads about 100kPa

Capicitance Sensor.

3 Wired Pressure Sensors

Capacitance

Disk Pressure to be measured on 1 site

&

Reference Pressure on the other site

2 Disks Toward/ Away from eachother depending on the Pressure.

Capacitance Value Changes Intergrated Circuit Converts this Capacitance into a Voltage Signal

Left side of the Engine Below the ECM

Altitude Derate Purpuse

Toward Front Engine

OEM’s Pressure Sensor not Installed Keep Shorting Plug on.

for OEM

Combination Sensors.

Pressure & temperature sensor combination

Installed in Main Oil Riffle Engine Protection System.

ESS + EPS

Other Sensors.

Fluid Level Sensor

Actuatoren.

CAN Bus System.

MULTIPLEXING

Traditionale communication.

Modern communication.

–Datalink: Term used to describe how devices

communicate with each other also referred to as

Termination Plug/ Data Bus Terminal is a Resistor.

Maximum Stub Lenght

is 1 Meter

Maximum Stub Lenght

is 1 Meter

Communication

over Two Wires.

Converting signals.

• analog sensor signal

• analog sensor signal

• fase 1: het analoge signaal bemonsteren

(‘samplen’)

• fase 1: het analoge signaal bemonsteren

(‘samplen’)

Converting signals.

• fase 3: digital signals from different components on

wire MULTIPLEXING

• fase 2: convert sample to binair number

SAE J 1587, J1708 & J1939

Nodes are connections to the Wiring Harness

(Main Bus??)

Protocol op Wiring Diagram:

J 1587

Example!

INLINE II

Protocol op Wiring Diagram:

J 1939

ABS Service Tool Transmission

120 Ohm

120

Ohm

Main Bus

J 1939

12

44

J1939 ( + ) J1939 ( - ) J1939 SHEILD

120

A B C

termination cap, blue insert, with

120Ω resistor between A and B

May not be fitted or hard wired in

some applications

120

A B C

termination cap, blue insert, with 120Ω

resistor between A and B

May not be fitted or hard wired in some

applications

A B C

On engine data link - Connection to service tool, orange cap insert

Requires power normally supplied from weather pack connector by fuel pump Can be extended up to cab i.e with 9 Pin Deutsch connector where power could be supplied from terminals C ( + ) and D ( - )

Data bus, up to 40m long Stubs should be no more than 1m Allows communication with other devices on J1939 data link

9 Pin Deutsch Connector

Datalink connector for Cummins Engines

SAE J 1587 / J 1708 and SAE J 1939 Communication

Voltage Supplies for Adaptor.

C D

J H

G F E

INLINE, INLINE I & II

3 Pin Deutsch Connector

Datalink connector for Cummins

Only SAE J 1939 Communication

Wiring Harness

Ambient air pressure sensor

8 pin Deutsch:

(VSS + ambient air temp)

03

41 45

46 50

02

41 45

46 50

1 2 3 4

8 7 6 5

1 = Ambient air temp signal

8 pin Deutsch:

(VSS + ambient air temp)

03

41 45

46 50

02

41 45

46 50

1 2 3 4

8 7 6 5

1 = Ambient air temp signal

41 45

46 50

03

41 45

46 50

01

41 45

46 50

46 50

EA2003 Diagnose stekker

31-pin OEM Connector

50-pin OEM Connector

J1939 node

connector J1587 nodeconnector

Air intake heater

connection

Cilinderhead coolant vent connection

C3 cylinder 2

C2 cylinder 1