The ISX line of Cummins engines is also the ... Cummins has retained since even their earliest Model U and Model K engines. Cummins' four-stroke design helped them take the lead in the on-highway ...
California using Westport Innovations HPDI system on Cummins ISX engines (pictured above is one of Wal-Mart's hybrid trucks being used for other tests). The deployment will be supported ...
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