2008年5月1日 · HTHS is High Temp High Shear is a test method to mesure oil vis under "High Temp High Shear" conditions that would be useful in a engine such as valve train or bearing areas. There is a Minimium HTHS vis for most multi grade oils there is NO maximium though so a oil could be a 5/30 and be way high in HTHS vis which would/may/could affect MPG

2019年4月29日 · HTHS dynamic viscosity is the current industry standard that best predicts fluid behavior in HTHS environments. It is designed to ensure engine lubricants maintain sufficient film strength to prevent excessive wear under engine operating conditions, while also allowing engine lubricants to have low enough viscosity to deliver fuel efficiency ...

2023年9月13日 · 先说一下专业解释，HTHS英文全称是High Temperature High Shear的字头，意思是“高温高剪切”（HTHS Viscosity @150°）， 描述了在150°C和10⁶ s-¹ 高剪切速率下测得的动态粘度，国际单位是毫帕秒（mPas）。

The concept exists of High HTHS and Low HTHS: A low HTHS oil has a lower viscosity at high temperature (<3.5 mPa.s) than that of a so-called High HTHS oil (>3.5 mPa.s). This notion is important as it allows for the classification, on the one hand, of fuel economy oils having a low HTHS and, on the other hand, of high protection oils having a ...

2018年6月29日 · Q8Oils offers low HTHS engine oils for the PCMO- and HDDO market that reduce fuel consumption while maintaining engine protection. All over the world stringent governmental vehicle regulations are pushing the boundaries …

What is the HTHS value for engine oil? HTHS is the abbreviation for “High Temperature High Shear”. It is the apparent viscosity of a multigrade engine oil at 150 °C (high temperature in the engine compartment) and a velocity gradient of 10 ­6 *s -1 in a defined measuring vessel according to the method CEC-L-36-A-97.

2019年4月14日 · HTHS measures the lubricant’s resistance to flow at elevated temperatures under constant shear and high speeds between moving parts which have narrow tolerances—the lower the measured number, the lower the resistance to flow and the higher the anticipated fuel efficiency benefits.

2019年8月23日 · HTHS measures the viscosity (resistance to flow) of an engine lubricant at elevated temperatures under constant shear, simulating the narrow tolerances and high speeds between moving parts in a hot engine.

Lower HTHS oil demand is expected to ramp up over the coming years to meet tougher emissions and fuel economy requirements. Wherever you are on the timeline, Afton is well positioned to help you make a smooth transition with the right balance between TCO and performance.

2022年5月26日 · Let's take a look at what HTHS is and what it affects. HTHS is a parameter that determines the thickness of the oil film. in the most stressed areas of the engine, such as the cylinder walls, they are always under heavy load during the piston stroke.