AVL FLOWSONIXTM AIR - avl.com · PDF filePUMA drivers RS232 Analog (010V, 420mA) ......

CONFIDENTIAL

Daniele Bistolfi

AVL CONSUMPTION TECH DAY

AVL FLOWSONIXTM AIR

2015

Hubert Krenn | BU-M / MMP | 06 November 2014 | 2Public

MEASUREMENT PRINCIPLE


AVL FLOWSONIXTM Air

Airflow

Mass [kg/h] (default)Volume [m³/h]VolumeNorm [m³N/h]

Airflow

Transmitter 1 = Receiver 2

Transmitter 2 = Receiver 1

t1

t2

Ultrasonic transit differential time

Signal 1

Signal 2

∆t ~ Flow velocity

MEASURING PRINCIPLE

Airflow

Any unauthorized copying, disclosure or distribution of the presentation is strictly forbidden


AVL ULTRASONIC TRANSDUCER

• Powerful & constant Signal Quality

• Very well acoustic-impedance match to air

• Broad Bandwidth (pulse generation & detection)

• Free of maintenance

• Unique time resolution - 1 kHz



TRANSMITT-

SIGNAL

TRANSIT TIME IN

THE SUCTION PIPERECEIVED

SIGNAL+

AVL FLOWSONIXTM AIR

Sampling rate ~

1kHz1 ms

Received signal Received signal

narrow – band

ultrasonic piezo transducer

TRANSIT TIME DETERMINATION

MASS FLOW CALCULATION

Broad – band

capacitive

ultrasonic

transducer



COMPONENTS &INTERFACES


1.Bellmouth

2.Inlet pipe

3.Measuring head

4.Outlet pipe

5.Evaluation unit

7

1

23

4

5

COMPONENTS



INTERFACES

Evaluation Unit

TCP/IPPUMA drivers

RS232

Analog (0…10V, 4…20mA)

Measuring Head Interface(25m)

CAN Bus Interface



MAINTENANCE


DIFFERENTIATION IN CALIBRATION

On-site maintenance

cleaning

Functionality test

Firmware update

System calibration (AVL Repair Center)

Proven long term stability of calibrationensures extented calibration intervals

Calibration labs in customers region

� 2 labs in Germany

� 1 lab in US/Colorado

� 1 lab in Brazil

� First contact in India

� China to be defined

10Any unauthorized copying, disclosure or distribution of the presentation is strictly forbidden


TECHNICAL DATA


FSA 100 (light duty)FSA 150 (heavy duty)

Measurement range:FSA 100 +/- (20…1400) kg/hFSA 150 +/- (40…2600) kg/h

Measurement uncertainty < 1% of reading

Reproducibility+/- 0,25% of reading

Sampling rateup to 1kHz

Air temperature:(-20…+80) °C

noncondensing air

Pressure:(0,6…2,5) bar

TECHNICAL DATA



HUMIDITY SENSOR


ULTRASONIC TRANSDUCER

Membrane

Carrier

Air

UDC

UAC



CONDENSATIONS

Conditions for condensation

Sensor temperature is lower than the

dew point of the measured media.

The diagram shows the dew point as

a function of temperature and

humidity

E.g. Air with 30°C & 55% rH

transducer temp. �20°C

If the measuring pipe/transducer is

=< 20°C condensation appears on these components



CORRECTIVE MEASURE – DEW POINT SENSOR

Working principle:

� An implemented dew point / humidity sensor monitors when condensation on the transducer appears.

� Having the case, the polarization will be reduced in order to protect the transducer for damages.

� The device will not supply measurement data until the device is ready for measurement again

Integration:

� All devices delivered since 11/2014

� New Firmware 3.01

� Switch off criteria:> 85% rel. humidity, 10 seconds

� Criteria for drying:< 70% rel. Humidity , 15 minutes



TEST RESULTS


CUSTOMER TEST RESULTS

Results FLOWSONIX Air

Engine speed

To

rqu

e



Deviation between Flowsonix andHFM device in [%]

Flowsonix VS HFM

To

rqu

e

Engine speed




Deviation in Lambda betweenFLOWSONIX Air and

Brettschneider calculation

To

rqu

e

Engine speed

Flowsonix recognizes pulsations for correct measurement




BENEFITS AT A GLANCE


CUSTOMER VALUE

� Correct bi-directional measurement with a high time resolution of 1kHz

� Deep insight view into the engine behavior enabled – e.g. turbo charger

� Extended application range due to high time resolution

� Proven long term stability of calibration

� CAN Bus with 1 kHz for accurate & fast measurements via digital signal

� CAN Bus signal can be used directly for ECU calibration (e.g. via INCA)

� Low pressure drop

� Downturn ratio of 1:70 requires only two flow meter tube sizes

�One Size for LD max. flow 1400 kg/h

�One Size for HD max. flow 2600 kg/h



APPLICATIONS


Load System

Test System Mechanics

STANDARD APPLICATION –INTAKE AIR MEASUREMENT

Combustion Airambient air,conditioned air

Measurement setup

Along with the fuel consumption the air consumption is an important parameter developing combustion engines.Hence, correct air measurement in different engine operating states - like idle speed, part- and full load, is an essential task in engine development requiring appropriate performance of the measurement devices



Combustion airt

SINGLE CYLINDER / SMALL ENGINES

Ambient airconditioned air



ambient air, conditioned air

TURBO CHARGER APPLICATION

Check and detect the pumping limit of turbochargers with a high-resolution air mass flow meter

Having an appropriate device the pumping limit of the turbocharger will be visible via the air mass flow

pumping limit

Measurement setup



ambient air,conditioned air

Load System


Combustion Air

MF Sensor

ECU – MASS FLOW SENSOR CALIBRATION

• Generation of a engine map for the intake air o performing stationary test runso performing transient tests

• Selection of the air mass flow sensor for the series• Optimized positioning of the sensor on the engine

Measurement setup



HD APPLICATION – PARTICULATE MEASUREMENT

Combustion Airambient air,conditioned air

Load System


AVL SMART SAMPLER

Particulate Measurement

Control Smart Sampler via air mass Analog out

Regulations: Europe � ISO 16183 for transient tests� ISO 8178 for stationary tests

USA � EPA title 40 => CFR 1065 for transient and stationary tests

Measurement setup



CLIME/ALTITUDE CHAMBER APPLICATION

Temperature range:-20°C…+80°C

Pressure range:600mbar…2500mbar

600mbar � equal to~4000m sea level

-0,50%

0,00%

0,50%

1,00%

1,50%

2,00%

2,50%

3,00%

-20 0 20 40 60 80

Rela

tiv

e e

rro

r [%

o.r

.]

Temperature [°C]

Influence of relative humidity to readings of the AVL FLOWSONIXTM Air NON CONDENSING

50%RH30%RH



CVS DILUTION TUNNEL

Dilution tunnelDilution air

Exhaust gasAir measurement

Measurement setup



PARTICLE IMAGE VELOCIMETRY MEASUREMENT

Blower

Air flow measurement

Flow velocity measurement

V I P test bed todetermine the velocitydistribution generated bythe intake ports in thecylinder liner

Measurement setup



F1 BRAKE TEST - AIR SIMULATION

Brake discs in F1 race cars are operating under extreme conditions. In order to simulate these conditions close to the reality the cooling air have to be controlled correctly. The cooling air (by wind speed & velocity) is generated in a wind channel. The quantity of air must be controlled quickly via an appropriate flap

Brake disc cooling air


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THANK YOU

AVL FLOWSONIXTM AIR - avl.com · PDF filePUMA drivers RS232 Analog (010V, 420mA) ......

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Transcript of AVL FLOWSONIXTM AIR - avl.com · PDF filePUMA drivers RS232 Analog (010V, 420mA) ......