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OECD AGR/CA/T(2001)20 Proposal to amend the hydraulic power and lifting force test (OECD Codes 1 and 2) (Contributo in atti di convegno)

Type

Prodotto della ricerca (Classe)
Contributo in atti di convegno (Classe)

Label

OECD AGR/CA/T(2001)20 Proposal to amend the hydraulic power and lifting force test (OECD Codes 1 and 2) (Contributo in atti di convegno) (literal)

Anno

2001-01-01T00:00:00+01:00 (literal)

Alternative label

Cavallo Eugenio (2001)
OECD AGR/CA/T(2001)20 Proposal to amend the hydraulic power and lifting force test (OECD Codes 1 and 2)
in 2001 OECD Annual Meeting of the Tractor Codes, Parigi, 14-16 February 2001
(literal)

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Cavallo Eugenio (literal)

Pagina inizio

1 (literal)

Pagina fine

3 (literal)

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Documento ufficiale OECD AGR/CA/T(2001)20 preparato, presentato alla conferenza da Eugenio CAVALLO come certificato da Mr. Michael Ryan, Head of the Unit OECD Code & Scheme, Trade and Agriculture Directorate, con lettera OECD prot TAD/CODES/T/130.13 del 29/08/2013 Prot. IMAMOTER 1864 del 02/09/2013 (literal)

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OECD Standard Code for the Official Testing of Agricultural and Forestry Tractor. 2001 Annual Meeting (literal)

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AGR/CA/T(2001)20 (literal)

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3 (literal)

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20 (literal)

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Imamater (literal)

Titolo

OECD AGR/CA/T(2001)20 Proposal to amend the hydraulic power and lifting force test (OECD Codes 1 and 2) (literal)

Abstract

General background 1. The updated version of ISO 789-10 standard \"Hydraulic power at tractor/implement interface\" was distributed to delegates for discussion at the 1997 Annual Meeting of Designated Authorities under AGR/CA/T(96)20. Delegates were of the opinion that the amendment of OECD Codes 1 and 2 with ISO 789-10 was not all useful and therefore did not appear desirable at that time. The Turin testing station proposed carrying out comparative tests on different tractors in accordance with both methods to check differences in measurements [Summary Record AGR/CA/T/M(97)1]. 2. At the 9th Biennial Test Engineers' Conference in Omiya, Japan, Turin delegates presented paper AGR/CA/T(97)33 providing information about test instruments and components needed to verify hydraulic system performance according to OECD and ISO 789-10 respectively. After discussion delegates found it premature to consider ISO 789-10 for OECD testing. A Working Group led by the Turin Testing Station, including Japan, USA, Germany and UK was established to conduct more experiments on the subject [Summary Record AGR/CA/T/M(97)2, item 7]. 3. During the 10th Biennial Test Engineers' Conference in Prague, the US delegation submitted a proposal to amend the hydraulic power test on the basis of the OECD Codes [AGR/CA/T(99)19], making mandatory only those parts of ISO 789-10 that are similar to the present hydraulic power test in Codes 1 and 2, whereas additional tests as specified in ISO 789-10 could be carried out at manufacturer's request. Difficulties were pointed out and the Turin Testing Station was invited to investigate further the behaviour of hydraulic power under both tests [AGR/CA/T/M(99)2]. 4. During the 2000 Annual Meeting, the Turin Testing Station presented fresh results in paper AGR/CA/T(2000)25 titled \"Comparison between hydraulic power test carried out according to OECD Code 1 and ISO 789-10\". Comparative tests had been performed on two tractors of 47.5 and 50.5 kW power and 63.8 and 60.0 l/min oil flow respectively. Comparative tests showed that the ISO 789-10 hydraulic power test gave lower results than OECD Codes tests. Parts of ISO 789-10 hydraulic power tests provide information more relevant for manufacturers than users. Furthermore, ISO 789-10 hydraulic power measurement increases cost in time and equipment. In the ensuing discussion, opinions remained divided as to the commercial interest of reporting results according to the ISO test method [see Summary Record AGR/CA/T/M(2000)1]. Some countries stressed the fact that most manufacturers still prefer clearly the OECD procedure. 5. In year 2000 the Turin Testing Station did not receive for testing any tractor with a high capacity hydraulic system. For this reason no new hydraulic capacity tests could be performed on heavy tractors. It is recognised that the interest of using ISO 789-10 depends on tractor hydraulic capacity. It is also recognised that harmonisation in this area would justify the inclusion of ISO test results in the tractor test reports, as an option and at manufacturer's request. (literal)

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