2018 ram cummins engine serial number location
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The anti backlash gears allow the engine to operate with minimal gear rattle. In early ISX engines an anti backlash gear train is used. The system is also required to de-rate power given any problems in order to reduce emissions to an absolute minimum.
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Cummins has corrected several malfunctions and conducted customer based research of several million miles of on road use of the Cummins ISX to make the DEF system as functional as possible.
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Power cuts and driver warnings are also used when the DEF system has been tampered with or is not functioning properly. When the DEF tank is low or empty, the ISX cuts power by twenty five percent. The Cummins ISX is required to have inhibitors in place for certain failures of the DEF system. DEF is system of injected urea that reduces the emissions of a diesel engine. The Cummins ISX also utilized DEF, or diesel exhaust fluid, in later models when EPA requirements changed. The oil displays passing results for both piston deposits and oil consumption, which means the DPF system would be optimized with use of zero-phosphorus, ultra low sulfur oil. A zero-phosphorus oil has been studied and found to be ideal for DPF systems and lubrication. An ash-less oil could mean that cleaning would be unnecessary, but can inhibit lubrication properties. This means the DPF needs to be regularly removed and cleaned for the Cummins ISX. Any in-combustibles found in lubrication additives will remain in the DPF, which can cause problems with back pressure and efficiency.
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The emissions control system will institute a filter regeneration which burns off the particulates. The DPF does have to be regularly maintained, however, because of its intricate design. The DPF filters out the solid particles in the engine's exhaust, reducing tailpipe emissions. The ISX also utilizes a DPF, or diesel particulate filter, required by the EPA. This makes the Cummins ISX that burns natural gas one of the cleanest running diesel engines in the world. The configuration boasts ninety percent lower NOx emissions than the current EPA standard. Testing has also been done with the Cummins ISX by the EPA for natural gas usage that yielded results of major NOx emissions reduction. Compensations are made for the natural gas so that the power band and operating range are still functional for customers, while reducing emissions. The predictive characteristics of the engine maximize both efficiency and useful power for the given fuel source. By examining the start of combustion (SOC), the engine's computer is able to employ a predictive ignition delay correlation. The ISX can achieve this by altering ignition delay and injection timing. The more efficient engine can produce less emissions in turn. The burning of a natural gas alternative preserves diesel thermal efficiencies. The Cummins ISX diesel engine can be run in a dual fuel configuration, meaning it can properly operate on diesel fuel and natural gas. The ISX15 CM2250 and CM2350 has eliminated the injector camshaft due to the advent of the common rail fuel system in which the fuel is pressurized from a high pressure, multiple piston pump, transferred through tubing to a rail where fuel is stored under extremely high pressures up to 35,000 psi. DEF is heated, pumped and injected into a decomposition tube which then reacts with the exhaust reducing NOX. SCR consists of a Diesel Exhaust Fluid (DEF - composed of urea and water) injection system: holding tank, pump, controller, and injector and an SCR catalyst brick.
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The current EPA 2010 version known as ISX15 CM2250 features enhanced Exhaust Gas Recirculation, Diesel Particulate Filter and Selective Catalytic Reduction (SCR), also known as Urea Injection.