id	keyword
alkej-324	� �
alkej-324	engine
alkej-324	hcci
alkej-324	ignition
alkej-324	combustion
alkej-324	fuel
alkej-324	compression
alkej-324	ratio
alkej-324	fig
alkej-324	equivalence
alkej-324	air
alkej-324	vol
alkej-324	injection