Durability requirements Sample Clauses
The Durability Requirements clause sets out the minimum standards for how long a product, material, or service must remain functional and free from defects. It typically specifies the expected lifespan or performance period, and may require the supplier to repair, replace, or compensate for items that fail within this timeframe. This clause ensures that buyers receive goods or services that meet agreed-upon quality standards, thereby reducing the risk of premature failure and disputes over product reliability.
Durability requirements. 9.1. The applicant shall ensure that the dual-fuel engine retrofit system when used and maintained according to the manufacturer’s instructions will comply with the applicable provisions during normal operation over a useful life of 4,000 operating hours or a service life of 6 years, whichever occurs first.
9.2. The dual-fuel engine retrofit system submitted to the durability tests as specified in Regulation No. 67 or Regulation No. 110, as applicable, shall be used to demonstrate the exhaust emission requirements as specified in paragraph 5. of this annex.
Durability requirements. 9.1. The applicant shall declare that the REC system when used and maintained according to the manufacturer’s instructions will comply with the applicable provisions during normal operation over a useful life of:
(a) For category M2 and M3 and N vehicles, a mileage of 200,000 km or a service life of 6 years, whichever occurs first;
(b) For all other applications, 4,000 operating hours or a service life of 6 years, whichever occurs first.
9.2. The applicant shall conduct a 1,000 hours durability test on an engine and REC combination. This test shall be either a field test in a typical vehicle or machine application agreed between the Type Approval Authority and the applicant or a test on an engine test bed. In the case of testing on an engine test bed, the aging cycle, load and speed shall include conditions that approximate to 10 per cent idle, 10 per cent transient operation, 75 per cent high speed-high load operation, and 5 per cent low speed-medium load operation. The engine for the durability run may be different from the test engine used for tests to establish the reduction level of the REC, but shall be an engine within the declared application range of the particular REC.
9.3. The content of the test is as follows:
(a) 1,000 hours service accumulation of the REC with recording of all relevant operating data of the engine concerned including type and consumption of fuel and lubricating oil , and when appropriate reagent or additive required by the REC device, and continuous second-by- second data logging of exhaust temperature before the REC and pressure loss over the REC. In the case of a field test the REC shall be sealed by the Technical Service and the data-logging shall be carried out by the REC manufacturer or by the operator of the vehicle or machine on which the endurance test is performed;
(b) In the case of REC that operate with additives or makes use of a reagent, verification of the correct dosing rate shall additionally be performed at the beginning of the field test, after 500 hours of operation and after 1,000 hours of operation.
9.4. After completion of the durability run the REC system used to demonstrate durability shall be used for any further evaluation testing with the original test engine. In the event that the original test engine is no longer functional, an engine of the same type may be used with the prior agreement of the Type Approval Authority.
9.5. The REC system shall meet the requirements of paragraph 8. when tested in ...