1、_ 6$(7HFKQLFDO6WDQGDUGV%RDUG5XOHVSURYLGHWKDW7KLVUHSRUWLVSXEOLVKHGE6$(WRDGYDQFHWKHVWDWHRIWHFKQLFDO and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising tKHUHIURPLVWKHVROHUHVSRQVL
2、ELOLWRIWKHXVHU SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2013 SAE International All rights reserved. No part of this publication may be reproduced, st
3、ored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-4970 (outside USA) Fax: 724-776-079
4、0 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/J2034_201312 SURFACE VEHICLE STANDARD J2034 DEC2013 Issued 1993-01 Revised 2013-12 Superseding J2034 AUG2008 Pers
5、onal Watercraft Ventilation Systems RATIONALE The SXUSRVHRIWKLVSURSRVHGUHYLVLRQLVWRFOHDUOGHILQHWKHWHUPQRUPDODFFXPXODWLRQRIELOJHZDWHUDQGWRFODULIWKHcompartments of the personal watercraft requiring ventilation. Minor editorial changes are also made. 1. SCOPE This SAE Standard applies to personal water
6、craft as defined in 3.3. 1.1 Purpose This document specifies construction and performance guidelines for ventilation of personal watercraft. It is intended as a guide towards standard practice and is subject to change to keep pace with experience and technical advances. 2. REFERENCES 2.1 Applicable
7、Documents There are no referenced publications specified herein. 3. DEFINITIONS 3.1 OPEN TO THE ATMOSPHERE Refers to a space or compartment that has at least 96.8 cm2(15 in2) of open area directly exposed to the atmosphere for each cubic foot 0.0283 cu. m. (1 cubic ft.) of net compartment volume. 3.
8、2 VENTILATION The changing of air within a compartment by natural means. Ventilation may be affected by dilution of contaminated air, by introduction of fresh air, or by local exhaust of contaminated air. SAE INTERNATIONAL J2034 Revised DEC2013 Page 2 of 2 3.3 PERSONAL WATERCRAFT A vessel less than
9、4 m (13 ft) in length which uses an internal combustion engine powering a water jet pump as its primary source of propulsion, and is designed to be operated by a person or persons sitting, standing, or kneeling on, rather than within, the confines of a hull. 3.4 NORMAL ACCUMULATION OF BILGE WATER Mi
10、nor amounts of water collecting in the bilge from spray, rain, seepage and spillage that can be removed by bilge pumps. The height of the normal accumulation of bilge water is below the lowest part of the engine, OR, measured at the top of the bilge pump inlet or the bilge pump automatic float switc
11、h. 4. REQUIREMENTS FOR VENTILATION Personal watercraft shall have a ventilation system which meets the requirements of this section. 4.1 Ventilation means an airflow in a compartment in a personal watercraft achieved by having: a. A supply opening or duct from the atmosphere or from a ventilated com
12、partment that is open to the atmosphere; and b. An exhaust opening into another ventilated compartment or an exhaust duct to the atmosphere. 4.2 Each exhaust opening or exhaust duct must originate in the lower third of the compartment. 4.3 The two openings shall be separated by one of the following
13、methods. a. Located at the fore and aft sides of the engine compartment. b. On opposite sides of the watercraft. c. Fitted with cowls which are pointed in opposite directions. 4.4 Each supply opening or supply duct and each exhaust opening or exhaust duct in a compartment must be above the normal ac
14、cumulation of bilge water. 4.5 The minimum internal cross-sectional area of each supply opening or duct and exhaust opening or duct must exceed 194 cm2(3.0 in2). 4.6 Ventilation shall be supplied to any compartment not open to the atmosphere and containing either a gasoline powered engine or a non-m
15、etallic fuel tank. 5. NOTES 5.1 Marginal Indicia A change bar (l) located in the left margin is for the convenience of the user in locating areas where technical revisions, not editorial changes, have been made to the previous issue of this document. An (R) symbol to the left of the document title indicates a complete revision of the document, including technical revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only. PREPARED BY THE SAE PERSONAL WATERCRAFT COMMITTEE
