There are 3 main reasons for controlling the consumption of diesel generator lubricating oil.

    The main components that consume lubricating oil include piston ring-cylinder liner systems, turbochargers, valve stems, and crankcases. Engine operation also affects lubricating oil consumption. By controlling lubricant consumption, diesel engine emissions of particulate matter are significantly reduced. In engines with complex aftertreatment systems, controlling oil consumption is even more critical than reducing engine particulate emissions.

    Lubricant oil consumption can have a significant impact on engine emissions, performance and maintenance-related aspects of diesel generators. In diesel engines with exhaust aftertreatment, lubricating oil can have many negative effects on aftertreatment systems and components. The following explains why it is necessary to control the consumption of lubricating oil.
1. Reduce the maintenance cost of diesel generators.
Changing the oil in a diesel generator is an additional maintenance item. In some cases, excessive oil consumption can lead to shorter oil change intervals. Lubricant consumption also affects the rate at which deposits form in the engine.
2. Reduce emissions.
Lubricating oils cause increased engine exhaust emissions. Especially hydrocarbon and carbon monoxide emissions, especially in small engines.
3. Reduce the impact on the cost and performance of the post-processing system.
Lubricating oil depletion deposits can have a significant impact on diesel particulate filters (DPF). Most of the ash accumulated in the DPF is produced by the lubricating oil consumed by the engine.

Keeping oil consumption low will result in:

1) The diesel particulate filter installed on the engine is smaller due to the lower ash deposition rate,
2) less frequent regeneration (and fuel economy loss) to avoid excessive pressure drop,
3) The degradation of the DPF ceramic substrate is less.

    Excessive accumulation of DPF petroleum-derived hydrocarbons can lead to uncontrolled regeneration and subsequent DPF damage. All emission control catalyst designs must therefore take into account the loss of catalyst activity, typically from petroleum-derived catalyst poisons or, in the case of SCR catalysts, exposure to petroleum-derived hydrocarbons.