The unique and varying features and operating conditions of natural gas engines ... balance cylinders, detect valve train problems and to determine frictional losses, by comparing engine ...

Natural gas engines have the potential to be ... to extend those intervals further than we have with the 12-liter,” he says. The new cylinder head design offers lower head temperature with ...

“The natural gas engine will have a unique cylinder head for the necessary cooling ... have a lower compression ratio than a diesel (at 12:1), it will be slightly less efficient.

This allows air to pass into the cylinder so the engine brake will function ... Although it feels different from a diesel ISX 12, the natural gas version pulls the way you'd expect a diesel ...

As it readies the 12L ISX-G to begin production in mid-2013, Cummins is taking this natural gas-fired heavy truck engine unit on ... a ‘lean misfire’ in the cylinder,” Murphy added.

also made news in May when it put in service the first of 20 Kenworth T680 day cabs powered by Cummins Westport’s 12-liter ISX12N natural gas engine. According to Cummins Westport, exhaust ...

The Cummins Westport natural gas ... engines is proprietary information that Cummins Westport won’t disclose, Arthurs said. But it involves limiting the amount of oxygen introduced into each ...

There are two aspects that differentiate natural gas engines from diesels ... re working to extend those intervals further than we have with the 12-liter,” he says. The new cylinder head design offers ...