Wireless microwave telemetry addresses the difficult issue of obtaining transducer outputs from reciprocating and rotating components through the use of advanced electronic components. This eliminates the requirements of a direct link between the transducer and the acquisition system. Accuracy of the transducer signal is maintained through the use of a double frequency modulation technique which provides temperature stability and a 20 point calibration of the complete system. Multiple transmitters can be used for larger applications and multiple antennas can be used to improve the signal strength and reduce the possibility of dropouts. Examples of automotive torque converter and piston temperature measurements are provided, showing the effectiveness of the wireless measuring technique.

Issue Section:
Design Innovation
Keywords:
data acquisition, telemetry, transducers, telemetry, torque converter, piston temperature, data acquisition
Topics:
Calibration, Microwaves, Pistons, Telemetry, Temperature, Thermocouples, Torque converters, Transducers, Signals, Pressure
1.
Barna
,
G.
, 2004, IR Telemetrics, Inc.
2.
Lawrason
,
G.
, and
Rollwitz
,
W.
, 1967, “
A Temperature Telemetry Technique for Reciprocating Engines
,” SAE Technical Paper Series No. 670026, pp.
167
–
175
.
3.
Burrahm
,
R. W.
,
Davis
,
J. K.
,
Perry
,
W. D.
, and
De Los Santos
,
A.
, 1992, “
Development of a Piston Temperature Telemetry System
,” SAE Technical Paper Series No. 920232, pp.
1
–
11
.
4.
Barna
,
G.
, 1989, “
An Infrared Telemetry Technique for Remote Piston Temperature Measurements in Internal Combustion Engines
,” M.S. thesis, Michigan Technological University, Houghton, MI.
5.
Assanis
,
D.
, and
Friedmann
,
F.
, 1991, “
A Telemetry Linkage System for Piston Temperature Measurements in a Diesel Engine
,” SAE Technical Paper Series No. 910299, pp.
1
–
12
.
6.
Kato
,
N.
,
Moritsugu
,
M.
,
Shimura
,
T.
, and
Matsui
,
J.
, 2001, “
Piston Temperature Measuring Technology Using Electromagnetic Induction
,” SAE Technical Paper Series No. 2001-01-2027, pp.
1890
–
1896
.
7.
Dong
,
Y.
,
Dorivi
,
V.
,
Attibele
,
P.
, and
Yuan
,
Y.
, 2002, “
Torque Converter CFD Engineering Part II: Performance Improvement through Core Leakage Flow and Cavitation Control
,” SAE Paper No. 020884.
8.
Schweitzer
,
J.
, and
Gandham
,
J.
, 2002, “
Computational Fluid Dynamics on Torque Converters—Validation and Application
,”
Proceedings 9th ISROMAC
.
9.
Ejiri
,
E.
, and
Kubo
,
M.
, 1999, “
Performance Analysis of Automotive Torque Converter Elements
,”
ASME J. Fluids Eng.
0098-2202,
121
, pp.
266
–
275
.
Crossref
Search ADS
 
10.
Watanabe
,
H.
,
Kurshashi
,
T.
, and
Kojima
,
M.
, 1997, “
Flow Visualization and Measurement of Torque Converter Stator Blades Using a Laser Sheet Lighting Method and a Laser Doppler Velocimeter
,” SAE Paper No. 970680.
11.
Mekkes
,
J.
,
Anderson
,
C.
, and
Narain
,
A.
, 2004, “
Static Pressure Measurements and Cavitation Signatures on the Nose of a Torque Converter’s Stator Blades
,” Paper No. ISROMAC10-2004-035.
12.
Miers
,
S.
, 2004, “
Impingement Identification and Characterization in a High Speed Diesel Engine using Piston Surface Temperature Measurements
,” Ph.D. dissertation, Michigan Technological University, Houghton, MI.
13.
Inal
,
M. K.
, 2005, “
Thermal Loading and Surface Temperature Analysis of the Piston of a Small HSDI Diesel Engine
,” Ph.D. dissertation, Michigan Technological University, Houghton, MI.
14.
Miers
,
S.
,
Anderson
,
C.
,
Blough
,
J.
, and
Inal
,
K.
, 2005, “Impingement Identification in a High Speed Diesel Engine using Piston Surface Temperature Measurements,” SAE Trans. J. Mater. Manuf., 114–5, pp.
845
–
851
.
Copyright © 2008
 by American Society of Mechanical Engineers
You do not currently have access to this content.