id	keyword
american_scientific_journal-2391	engine
american_scientific_journal-2391	cylinder
american_scientific_journal-2391	model
american_scientific_journal-2391	combustion
american_scientific_journal-2391	pressure
american_scientific_journal-2391	simulation
american_scientific_journal-2391	results
american_scientific_journal-2391	figure
american_scientific_journal-2391	study
american_scientific_journal-2391	mass