PLUG AS 1503072 - Caterpillar

To optimize the performance of the 3516B HD engine, a new turbocharger arrangement was also developed. This new, more efficient turbocharger arrangement features four identical single stage turbochargers providing improved fuel to air mixtures and a more efficient fuel burn. The 3516B HD design eliminates both the wastegate and the series turbocharging design of previous 3516 engines in the 793B. This simpler design offers improved serviceability and lower operating costs. This upgraded engine comes with special software that allows it to work with existing machine control modules. The 3516B HD engine requires installation of VIMS monitoring system which uses the latest 9.62 version of VIMS configurations. The 3516B HD is capable of operating at altitudes up to 3700m (12,000 ft.) without performance deration. For high altitude sites where fuel economy is a top priority the 3516B HD will provide fuel efficiency with a derate of 0.8% per kpa (390ft) of altitude starting at 3700m (12,000 ft.). 3516B HD Delivers Lower Operating Cost-Per-Ton 3516B HD Engine Operation
The 3516B HD engine combustion system provides real fuel efficiency improvements for 793B users. On a full load comparison Brake Specific Fuel Consumption (BSFC) is reduced from 218 to 199, an improvement of approximately 9 % over the short stroke engine. Lower BSFC contributes to longer engine life. Elimination of the turbocharger wastegate and series turbocharging also contributes to reduced fuel consumption, lower maintenance costs, and extended engine life. The new design increases engine displacement by 13% which lowers Brake Mean Effective Pressure (BMEP), effectively reducing thermal, pressure and vibration stresses on the engine. Lower BMEP is critical to extended component life and longer overall engine life. Recommended oil and oil filter change intervals have been extended from 250 to 500 hours. The 3516B HD engine provides the option for Oil Renewal System (ORS). The following chart illustrates the engine life a customer can expect with a 3516B HD engine in relation to the life they previously experienced with the 3516 engine under a given load factor. On the average, because of the improvements made with the 3516B HD, about 100,000 more gallons of fuel can be burned over the life of the engine thus equating to more life between overhauls. 3516B HD Machine Intelligence
With the 3516B HD upgrade, on-board engine and machine diagnostics are required. A reprogrammable (flashable) ECM with expanded diagnostic memory capacity increases software utilization for optimum engine management. Enhanced self-protection features which contribute to longer engine life include exhaust temperature deration, engine oil level monitoring, oil filter restriction sensing, acceleration delay, and engine crankcase pressure monitoring. Additional sensors have been added, together with the new engine control module, new wiring harness and wiring plugs. There is also facility for control of associated optional systems: pre-lube, fans (Rockford), radiator shutters. 3516B HD Engine Upgrade Option for 793B Mining Trucks
Owners of 793B mining trucks (S/N 1HL) can upgrade to the HD engine via a Reman