Section 10 Component tests and engine type testing
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Inland Waterways Ships, July 2022 - Part 5 Main and Auxiliary Machinery - Chapter 2 Engines - Section 10 Component tests and engine type testing

Section 10 Component tests and engine type testing

Parent topic: Chapter 2 Engines

10.1 Hydraulic tests

10.1.1 In general, items are to be tested by hydraulic pressure as indicated in Table 2.10.1 Test pressures for oil engine components. Where design features are such that modifications to the test requirements shown in Table 2.10.1 Test pressures for oil engine components are necessary, alternative proposals for hydraulic tests are to be submitted for special consideration.

Table 2.10.1 Test pressures for oil engine components

Item Test Pressure
Fuel injection system Pump body, pressure side The lesser of 1,5p or p + 295 bar
Valve
Pipe
Cylinder cover, cooling space 7,0 bar
Cylinder liner, over the whole length of cooling space
Piston crown, cooling space (where piston rod seals cooling space, test after assembly)
Cylinder jacket, cooling space The greater of 4,0 bar or 1,5p
Exhaust valve, cooling space
Turbocharger, cooling space
Exhaust pipe, cooling space
Coolers, each side
Engine driven pumps (oil, water, fuel, bilge)
Air compressor, including cylinders, covers, intercoolers and aftercoolers Air side: 1,5p
  Water side: The greater of 4,0 bar or 1,5p
Scavenge pump cylinder 4,0 bar

Note 1. p is the maximum working pressure in the item concerned.

Note 2. Fuel pumps of the jerk or timed pump system are not included.

Note 3. Turbocharger air coolers need only be tested on the water side.

Note 4. For forged steel cylinder covers alternative testing methods will be specially considered.

10.2 Engine type testing

10.2.1 New engine types or developments of existing types are to be subjected to an agreed programme of type testing to complement the design appraisal and review of documentation.

10.2.2 Guidelines for type testing of engines will be supplied on application.

10.2.3 An engine type is defined in terms of:

  • basic engine data: e.g. bore, stroke;
  • working cycle: 2 stroke, 4 stroke;
  • cylinder arrangement: in-line, vee;
  • cylinder rating;
  • fuel supply: e.g. direct, or indirect injection, dual fuel;
  • gas exchange: natural aspiration, pressure charging arrangement.

10.2.4 Where an engine type has subsequently proved satisfactory in service with a number of applications a maximum uprating of 10 per cent may be considered without a further complete type test.

10.2.5 A type test will be considered to cover engines of a given design for a range of cylinder numbers in a given cylinder arrangement.

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