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International Lubricant Evaluation • ***ACEA* Engine Evaluation***
Peugeot TU3M Valve Train Scuffing Wear Evaluation
(CEC L-38-A-94)

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	Peugeot TU3M valve train scuffing wear evaluation apparatus at SwRI

Southwest Research Institute (SwRI) offers the Peugeot TU3M valve train scuffing wear test, which evaluates a lubricant's ability to protect an engine's valve train components.

ACEA 2004 Specifications

The Peugeot TU3M valve train scuffing wear test is part of ACEA 2004 Specifications:

Gasoline and Diesel Engines	Gasoline and Diesel Engines with Aftertreatment Devices
A1/B1-04 A3/B3-04 A3/B4-04 A5/B5-04	C1-04 C2-04 C3-04

Field Service Simulated

The CEC L-38-A-94 test simulates slow and moderate speeds and low-temperature driving.

CEC L-38-A-94 Test Fixture

A Peugeot TU3M 1.3 liter, inline, 4-cyclinder engine mounted on a test stand with a dynamometer is used for this test.

CEC L-38-A-94 Test Parameters

The test runs a 40-hour step at 1,500 rpm with oil and coolant temperatures of 40°C and 45°C, then a 60-hour step at 3,000 rpm with oil and coolant temperatures of 100°C and 90°C.

CEC L-38-A-94 Test Parts Evaluated

The rocker pads are rated for scuffing, and the camshaft lobes are measured for wear.

Used Engine Lubricant Analysis

The oil is sampled and checked at 0, 40, and 100 hours for iron content and fuel dilution.

Pass / Fail Criteria

Gasoline and Diesel Engines
Properties	Limits
Properties	A1/B1-04	A3/B3-04	A3/B4-04	A5/B5-04
Cam Wear, avg., μm	≤10	≤10	≤10	≤10
Cam Wear, max., μm	≤15	≤15	≤15	≤15
Pad Merit (avg. of 8 pads), merit	≥7.5	≥7.5	≥7.5	≥7.5

Gasoline and Diesel Engines with Aftertreatment Devices
Properties	Limits
Properties	C1-04	C2-04	C3-04
Cam Wear, avg., μm	≤10	≤10	≤10
Cam Wear, max., μm	≤15	≤15	≤15
Pad Merit (avg. of 8 pads), merit	≥7.5	≥7.5	≥7.5

For more information about Peugeot TU3M valve train scuffing wear evaluation (CEC L-38-A-94) capabilities at SwRI or how you can contract with SwRI, please contact Ryan Johnson at rjohnson@swri.org or (210) 522-2892.

*Association des Constructeurs Européens d'Automobiles / European Automobile Manufacturers Association.

Contact Information

Ryan Johnson

Peugeot TU3M Valve Train Scuffing Wear Evaluation (CEC L-38-A-94)

(210) 522-2892

rjohnson@swri.org

Related Terminology

CEC L-38-A-94

Peugeot TU3M

valve train scuffing

wear testing

protect engine valve
train components

engine lubricant
analysis

ACEA 2004
specifications

standardized lubricant
testing

engine lubricants

Association des
Constructeurs
Européens
d'Automobiles

European Automobile
Manufacturers
Association

Related Information

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Southwest Research Institute® (SwRI®), headquartered in San Antonio, Texas, is a multidisciplinary, independent, nonprofit, applied engineering and physical sciences research and development organization with 11 technical divisions.

September 30, 2008

International Lubricant Evaluation • ACEA* Engine Evaluation Peugeot TU3M Valve Train Scuffing Wear Evaluation (CEC L-38-A-94)