... Features: Low cost, high efficiency, compact structure, environment friendly.Heavy load durable, four-stroke, water cooled engine.Excellent transient response ... ): ≤ 3Voltage Recovery Time(S): ≤4Waveform Distortion(%): ≤5Diesel engine: Cummins*Heavy load durable, four-stroke, water cooled engine*Excellent transient response ... *Dual spin-on paper element fuel filter Cummins Silent Diesel Generator Sets