EK4B-M compressor: cylinders restored, faster charging, lower current

Cylinder geometry recovered, the tank filled faster, current draw dropped. 4.8 % — compressor current draw, 8.3 → 7.9 A; 36 % — compressor output by reservoir charging time, 2 min 32 s → 1 min 52 s (2000).

Fili electric depot of the Moscow Metro · approved by depot head V. A. Bersenev · endorsed by R&D company “Problems of Friction and Wear”

Moscow, Russia · acceptance by the customer's commission: chief mechanic, head of the production and engineering department, process engineer, foreman, technician · two seals

PRODUCTXADO technology®treatment of the compressor cylinder-piston group

TEST OBJECTEK4B-M compressorserial no. 16484 · cylinders I and II

DOCUMENT TYPETechnical report
of the Fili electric depot

Key results

↓4.8%

compressor current draw,8.3 → 7.9 A

↑36%

compressor output by reservoir charging time,2 min 32 s → 1 min 52 s

EQUIPMENT	CONDITION AT THE START OF TESTS	WHAT WAS MEASURED
EK4B-M compressor, serial no. 16484	Worn parts of the cylinder-piston group	Current draw · reservoir charging time · geometry of cylinders I and II

Compressor operating mode: current and reservoir charging

PARAMETER	BEFORE TREATMENT	AFTER TREATMENT
Current draw	8.3 A	7.9 A
Reservoir charging time from 0.0 to 4.0	2 min 32 s	1 min 52 s

The measurement mode before and after is identical. From these figures the report records a 5 % reduction in power consumption and a 36 % gain in output.

Compressor cylinder geometry — the cause of everything else

MEASUREMENT POINT	CYL. I, BEFORE	CYL. I, AFTER	CYL. II, BEFORE	CYL. II, AFTER
Horizontal, 1	0.150	0.145	0.130	0.125
Horizontal, 2	0.150	0.150	0.140	0.130
Horizontal, 3	0.130	0.130	0.160	0.130
Vertical, 1	0.130	0.130	0.170	0.145
Vertical, 2	0.150	0.135	0.170	0.150
Vertical, 3	0.150	0.120	0.150	0.120

Values are given as in the table of the report. Of the 12 measurement points, 9 decreased and none increased.

Conclusion of the report

The technical report of the Fili electric depot of the Moscow Metro states: “Restoration of the geometry of worn parts has been performed”. The compressor arrived for treatment worn, and the coating grown on the friction surfaces returned the cylinders to their geometry — hence everything else: the current draw fell from 8.3 to 7.9 A, and the reservoir charging time from 2 min 32 s to 1 min 52 s, “which corresponds to: a 5% reduction in power consumption and an increase in output of 36%”. The measurements were taken ahead of time: the compressor “had run 280 engine hours instead of the 350 required”, and the report concludes — “Consequently the effect of applying XADO technology will be improved”. The economic effect, excluding the restoration of worn parts, is estimated by the report at 41 %.

Current equivalent

Revitalizant gel for compressors and bearingsCompressors · bearings · spindles
Revitalizant gel for cylinder restorationEngine cylinders, deep wear

How such units are treated: Compressor Cylinder-piston group

About this result: Power consumption Clearances and backlash

Limits of this report: The results relate to the EK4B-M compressor, serial no. 16484, of the Fili electric depot of the Moscow Metro and to the measurement modes recorded in the report; on other equipment and under other operating modes the figures may differ.

Request a pilot for this unit

EK4B-M compressor: cylinders restored, faster charging, lower current

Key results

Compressor operating mode: current and reservoir charging

Compressor cylinder geometry — the cause of everything else

Conclusion of the report

Pilot treatment on the enterprise's equipment

Technology deployment programme

EK4B-M compressor: cylinders restored, faster charging, lower current

Key results

Compressor operating mode: current and reservoir charging

Compressor cylinder geometry — the cause of everything else

Conclusion of the report

Related cases