Last Updated：2025/11/23
Sentence
整備士は、古いスクーターで排気のスカベンジング不足によりシリンダーに未燃混合気が残り、二行程エンジンが二回に一度しか点火しないという異常を診断した。
Quizzes for review
The mechanic diagnosed four-stroking in the old scooter after hearing intermittent misfires and poor acceleration.
See correct answer
The mechanic diagnosed four-stroking in the old scooter after hearing intermittent misfires and poor acceleration.
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Related words
four-stroking
Noun
uncountable
(automotive)
Abnormal
operation
of
a
two-stroke
internal
combustion
engine,
such
that
the
cylinder
only
fires
every
second
cycle
(like
a
four-stroke
engine).
This
occurs
when
the
exhaust
scavenging
and
inlet
charging
leaves
a
mixture
in
the
cylinder
which
does
not
ignite,
but
needs
a
second
scavenge/charge
to
produce
an
adequate
mix.
Japanese Meaning
（自動車工学）二行程内燃機関において、排気や吸気の過程でシリンダー内に十分な混合気が形成されず、通常の毎サイクルでの点火が発生せず、二サイクルごとに燃焼が起こる異常な作動状態。すなわち、二行程エンジンが四行程エンジンのように動作する現象を指す。
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