Absolute pressure measurements and analysis of diamonds subjected to maximum static pressures of 1.3–1.7 Mbar

1979 ◽  
Vol 50 (8) ◽  
pp. 1002-1009 ◽  
Author(s):  
H. K. Mao ◽  
P. M. Bell ◽  
K. J. Dunn ◽  
R. M. Chrenko ◽  
R. C. DeVries
Keyword(s):  
Absolute Pressure ◽  
Pressure Measurements

Absolute pressure measurements using ZrO2electrochemical cells

1981 ◽  
Vol 39 (11) ◽  
pp. 924-926 ◽  
Author(s):  
W. A. Fate ◽  
Robert E. Hetrick ◽  
W. C. Vassell
Keyword(s):  
Absolute Pressure ◽  
Pressure Measurements

scholarly journals Absolute pressure measurements on a nanosecond time scale using surface plasmons

1996 ◽  
Vol 69 (27) ◽  
pp. 4159-4161 ◽  
Author(s):  
A. Schilling ◽  
O. Yavaş ◽  
J. Bischof ◽  
J. Boneberg ◽  
P. Leiderer
Keyword(s):  
Surface Plasmons ◽  
Time Scale ◽  
Absolute Pressure ◽  
Pressure Measurements ◽  
Nanosecond Time Scale

New BNM-LNE standard for absolute pressure measurements up to 1 MPa

Metrologia ◽  
1999 ◽  
Vol 36 (6) ◽  
pp. 535-539 ◽  
Author(s):  
J Le Guinio ◽  
J C Legras ◽  
A El-Tawil
Keyword(s):  
Absolute Pressure ◽  
Pressure Measurements

Report of pilot study CCM.P-P1 for international comparison of absolute pressure measurements in gas from 3 × 10-9 Pa to 9 × 10-4 Pa

Metrologia ◽  
2015 ◽  
Vol 52 (1A) ◽  
pp. 07012-07012 ◽  
Author(s):  
Hajime Yoshida ◽  
Kenta Arai ◽  
Eiichi Komatsu ◽  
Kenichi Fujii ◽  
Thomas Bock ◽  
...  
Keyword(s):  
Pilot Study ◽  
International Comparison ◽  
Absolute Pressure ◽  
Pressure Measurements

Final report on key comparison APMP.M.P-K3: Absolute pressure measurements in gas from 3 × 10−6Pa to 9 × 10−4Pa

Metrologia ◽  
2011 ◽  
Vol 48 (1A) ◽  
pp. 07013-07013 ◽  
Author(s):  
H Yoshida ◽  
K Arai ◽  
H Akimichi ◽  
S S Hong ◽  
H W Song
Keyword(s):  
Absolute Pressure ◽  
Final Report ◽  
Pressure Measurements ◽  
Key Comparison

Final report of key comparison CCM.P-K3: absolute pressure measurements in gas from 3 × 10−6Pa to 9 × 10−4Pa

Metrologia ◽  
2010 ◽  
Vol 47 (1A) ◽  
pp. 07004-07004 ◽  
Author(s):  
D A Olson ◽  
P J Abbott ◽  
K Jousten ◽  
F J Redgrave ◽  
P Mohan ◽  
...  
Keyword(s):  
Absolute Pressure ◽  
Final Report ◽  
Pressure Measurements ◽  
Key Comparison

Comparison of Cylinder Pressure Measurements on a Heavy-Duty Diesel Engine Using a Switching Adapter

2018 ◽  
Author(s):  
Adam B. Dempsey ◽  
Patrick J. Seiler ◽  
Simon Johnson
Keyword(s):  
High Pressure ◽  
Diesel Engine ◽  
Thermal Shock ◽  
Pressure Sensor ◽  
Absolute Pressure ◽  
Pressure Measurements ◽  
Cylinder Pressure ◽  
Heavy Duty ◽  
Piezoresistive Sensor ◽  
The Impact

In this study, a variety of piezoelectric pressure transducer designs and mounting configurations were compared for measuring in-cylinder pressure on a heavy-duty single-cylinder diesel engine. A unique cylinder head design was used which allowed cylinder pressure to be measured simultaneously in two locations. In one location, various piezoelectric pressure transducers and mounting configurations were studied. In the other location, a Kistler water-cooled switching adapter with a piezoresistive pressure sensor was used. The switching adapter measured in-cylinder pressure during the low pressure portion of the cycle. During the high pressure portion of the cycle the sensor is protected from the high pressure and high temperature gases in the cylinder. Therefore, the piezoresistive sensor measured in-cylinder pressure highly accurately, without the impacts of short term thermal drift, otherwise known as thermal shock. Additionally, the piezoresistive sensor is an absolute pressure sensor which does not require a baseline or “pegging” on every engine cycle. With this measurement setup, the amount of thermal shock and induced measurement variability was accurately assessed for the piezoelectric sensors. Data analysis techniques for quantifying the accuracy of a piezoelectric cylinder pressure measurements are also presented and discussed. It was observed that all the piezoelectric transducers investigated yielded very similar results regarding compression pressure, start of combustion, peak cylinder pressure, and the overall heat release rate shape. Differences emerged when studying the impact of the transducer mounting (e.g., recessed vs. flush-mount). Recessed-mount transducers tended to yield a more accurate measurement of the cycle-to-cycle variability when compared to the baseline piezoresistive sensor. This is thought to be due to reduced levels of thermal shock, which can vary from cycle-to-cycle.

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