Comparison of Turbocharging and Pressure Wave Supercharging of a Natural Gas Engine for Light Commercial Trucks and Vans

To increase the efficiency of a natural gas engine, use Miller camshaft was analysed. avoid decline in low-end torque and also transient response, pressure wave supercharger (Comprex™) compared to conventional single-stage turbocharger. The analyses for this conceptual comparison were performed experimentally, data then used run simulations driving cycles light commercial vehicles. A 49% resulted at 1250 rpm when Comprex™ combination with camshaft. Despite camshaft, response still faster than turbocharged engine. Using same engine took 2.5-times as long reach torque. Water injection peak power output while respecting temperature limitations. As enables braking by design, we show that friction brakes reduced two-thirds. Finally, six-times catalyst warmup an up 90 °C higher exhaust three-way catalytic converter added benefits using supercharger. known drawbacks superchargers solved due complete redesign machine, which is described detail.