868
INAMURA, TAKAHASHI, AND KUMAKAWA
and it is limited to less than 6% within the limited range of the
present experimentalconditions.
Acknowledgments
The authors wish to express their thanks to M. Sasaki,
H. Sakamoto, K. Yoshimura, and M. Sei for their help with the
experiments.
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6 In the presentexperimentalconditionrange,pilotfuelinjection
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(
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