November 29, 2020

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Evolution of lubricant design for TGDi engines

We see a constant global drive towards lower vehicle CO2 emissions. Engine technology is evolving to meet these aggressive targets, ranging from combustion management, exhaust after-treatment, new hardware, fuels and lubricants.

The predominant solution for passenger car gasoline vehicles involves downsized direct injection technologies with turbocharging. These TGDi are operated at reduced speed to optimise fuel consumption. However, this results in several design and operation issues that necessitate consideration in terms of lubricant formulations. Indeed emerging specifications will test and define the needed performance in areas such as low-speed pre-ignition (LSPI), timing chain wear and lubricant thermal robustness.

This presentation will explore these TGDi design features and how lubricant design must adapt to address these needs.

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Possible replacement of paraffinic Group I base oils over a wide range of viscosities

Used oil treatment in a changing environment