INSIGHT
ACEA Sequences: Revisions for Insight
Uwe Zimmer, Industry Liaison Advisor, Infineum
The ACEA specifications provide a set of performance requirements that define service-fill engine oils that offer baseline protection for the majority of the European vehicle fleet. These oils, when used as recommended, are expected to run in vehicles without causing any problems and deliver a level of performance on which marketers, OEMs and consumers can rely.
The last revisions to the ACEA Oil Sequences, published in December 2016, introduced measures to ensure lubricants continue to deliver sufficient protection to heavy and light-duty engines.
These Sequences became mandatory for new claims on 1 December 2017, and oils with ACEA 2012 claims may be marketed until 1 December 2018.
It is important for regular updates to be made so that the Sequences continue to reflect engine hardware needs and address specific issues.
In addition, as current test hardware becomes unavailable, it is essential to ensure appropriate replacement tests are developed. With these factors in mind, ACEA has started work on the next revisions, initially aiming for release in 2018. However, there is recognition that the timing is ambitious and it remains to be seen if this timing is feasible.
10 LUBE MAGAZINE NO.145 JUNE 2018
Light-duty new challenges Improving the efficiency of internal combustion engines is high on the agenda of automotive manufacturers. The new turbocharger deposit test aims to improve turbocharger efficiency and ultimately engine efficiency. Toyota has kindly offered the hardware and the draft test procedure and Toyota’s commitment and effort here is very much appreciated by all of the stakeholders. Work is now underway at CEC so that the ‘Toyota test’ can become a CEC test, which will enable its introduction into the ACEA Sequences in compliance with EELQMS (European Engine Lubricant Quality Management System).
Low-speed pre-ignition (LSPI) is another item of interest that is related to engine efficiency and durability. Today’s turbocharged gasoline direct injection (GDI) engines are state of the art. When these engines are operated under low-speed and high-load driving conditions, pre-ignition events can occur, resulting in high pressure peaks, knocking and potentially engine damage. From an efficiency point of view, engine developers would like to take advantage of the low-speed / high-load operating regime, but LSPI prevents them from leveraging the full potential.
Lubricants have been found to have an impact on LSPI. This has led to the development of an ASTM LSPI test for the ILSAC GF-6 specification, and this test is
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