Cummins Generators Compliant with California Standards

A picture of Cummins Onan RV QG 4000i generator

Cummins Inc.’s Onan RV and commercial mobile generator line will be compliant with California Air Resource Board (CARB) Small Off-Road Engines (SORE) 2024 standards, the company said.

The company’s spark-ignited product portfolio will be certified to the new regulations. The Onan Quiet Gas portfolio underwent mechanical changes and engine calibration adjustments to reach the significant emissions reduction targets.

In addition to the modifications of previous models, Cummins is introducing an entirely new generator platform to the Quiet Gas series called Onan QG 4000i.

The Onan QG 4000i replaces the current QG 4000. The generator features electronic fuel injection, a permanent magnet alternator and inverter technology to provide quieter operation, more fuel efficiency and over 50% reduction in hydrocarbon (HC) + nitrogen oxide (NOx) and carbon dioxide (CO) emissions.

“While these emissions reductions are very challenging,” Cummins said, “Cummins is prepared to achieve them with modern engine technology such as electronic fuel injection and exhaust aftertreatment. Cummins innovates technology and products to meet government regulations related to the emissions of their products.”

The QG 4000i’s closed-loop fuel system uses an oxygen sensor to provide critical operating feedback to the engine. This feedback from the oxygen sensor allows the engine to optimize the system for maximum fuel efficiency and minimum exhaust emissions, a feature never before available on an Onan generator. The Onan QG 4000i will be available for sale in California in April 2024.

OEMs and RV dealers will get a first look at the new product portfolio this month as Cummins kicks off the Onan Unplugged Tour. The company made its first stop Tuesday in Irvine, California, and will be in Modesto, California, today to meet with dealers and demonstrate the new products.

Onan’s LP generators—the QG 3600 LP, QG 5500 LP, and QG 6500 LP—operate on liquid propane vapor. The fuel burns cleaner than gasoline and will meet the emissions regulation with no mechanical changes. The entire LP generator portfolio will be available in California beginning Jan. 1, 2024.

The Onan QG 2500i LP and QG 2800i, introduced in 2020, feature a variable-speed electronic fuel injection engine and inverter technology. The generators will be enhanced and re-calibrated and be available in California in February 2024.

The Onan QG 5500 and QG 7000 generators have EFI variants available today and are undergoing electronic calibration and certification development to reach the new targets. Only the EFI variants will be available for sale in California, beginning in April 2024.

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