Abstract
In the present study, a new test method is investigated to measure the total friction loss of engines over the entire ranges of speed and load. It is based on the idea that the friction loss close to the actual one of fired and braked engines can be measured by the run-out method because the temperature condition influencing the friction loss is nearly stable for the short test duration after the fuel cut. From the test results and the comparison with those measured by other conventional test methods, the following become evident. (1) The frictional mean effective pressure increases slightly as the revolution speed increases, but it decreases as either the load or the cooling water temperature increases. (2) The frictional mean effective pressure measured by the present method is smaller than that measured by the run-out mothod, the motoring method or Willans line method, but it is larger than the one measured by the indicated pressure diagram method.
| Original language | English |
|---|---|
| Pages (from-to) | 1866-1871 |
| Number of pages | 6 |
| Journal | Transactions of the Japan Society of Mechanical Engineers Series B |
| Volume | 60 |
| Issue number | 573 |
| DOIs | |
| Publication status | Published - Jan 1 1994 |
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All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Mechanical Engineering
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Studies on Measurement Method of Total Friction Loss of Internal Combustion Engines. / Soejima, Mitsuhiro; Wakuri, Yutaro; Kitahara, Tatsumi; Ejima, Yoshito; Nakata, Yasuhiko.
In: Transactions of the Japan Society of Mechanical Engineers Series B, Vol. 60, No. 573, 01.01.1994, p. 1866-1871.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Studies on Measurement Method of Total Friction Loss of Internal Combustion Engines
AU - Soejima, Mitsuhiro
AU - Wakuri, Yutaro
AU - Kitahara, Tatsumi
AU - Ejima, Yoshito
AU - Nakata, Yasuhiko
PY - 1994/1/1
Y1 - 1994/1/1
N2 - In the present study, a new test method is investigated to measure the total friction loss of engines over the entire ranges of speed and load. It is based on the idea that the friction loss close to the actual one of fired and braked engines can be measured by the run-out method because the temperature condition influencing the friction loss is nearly stable for the short test duration after the fuel cut. From the test results and the comparison with those measured by other conventional test methods, the following become evident. (1) The frictional mean effective pressure increases slightly as the revolution speed increases, but it decreases as either the load or the cooling water temperature increases. (2) The frictional mean effective pressure measured by the present method is smaller than that measured by the run-out mothod, the motoring method or Willans line method, but it is larger than the one measured by the indicated pressure diagram method.
AB - In the present study, a new test method is investigated to measure the total friction loss of engines over the entire ranges of speed and load. It is based on the idea that the friction loss close to the actual one of fired and braked engines can be measured by the run-out method because the temperature condition influencing the friction loss is nearly stable for the short test duration after the fuel cut. From the test results and the comparison with those measured by other conventional test methods, the following become evident. (1) The frictional mean effective pressure increases slightly as the revolution speed increases, but it decreases as either the load or the cooling water temperature increases. (2) The frictional mean effective pressure measured by the present method is smaller than that measured by the run-out mothod, the motoring method or Willans line method, but it is larger than the one measured by the indicated pressure diagram method.
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U2 - 10.1299/kikaib.60.1866
DO - 10.1299/kikaib.60.1866
M3 - Article
VL - 60
SP - 1866
EP - 1871
JO - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
JF - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
SN - 0387-5016
IS - 573
ER -