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1、SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical 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 therefr
2、om, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. TO PLACE A DOCUMENT ORDER: +1 (724) 776-4970 FAX: +1 (724) 776-0790 SAE WEB ADDRESS h
3、ttp:/www.sae.org Copyright 2001 Society of Automotive Engineers, Inc. All rights reserved.Printed in U.S.A. SURFACE VEHICLE 400 Commonwealth Drive, Warrendale, PA 15096-0001 RECOMMENDED PRACTICE J1608 REV. SEP2001 Issued1994-02 Revised2001-09 Superseding J1608 FEB1994 Manual Transmission Shift Patte
4、rns 1.ScopeProvide standard shift pattern guidelines for manual transmission shift controls in light, medium, and heavy trucks and buses. 2.ReferencesThere are no referenced publications specified herein. 3.Control Sequence 3.1Straight Shift PatternProgression is from the lowest to the highest gear.
5、 The lowest gear is in the left-most full plane and gear changes should progress to the right with highest gear at the most right-ward position; highest gear in a full plane is rearward. Overdrive gear will follow the standard progression. Reverse gear is in the left-most position and forward. 3.2Co
6、mpound Range PatternProgression is from the left to right with successively higher gearing in low range, until the highest gear is reached. A low to high range shift is then accomplished by means of a range shift control, followed by an exact repeat of the initial shift pattern starting from the “fi
7、rst” position. 3.2.1RANGE SHIFT CONTROLLocated on front of shift control. Operates in the vertical plane (parallel to the lever) with the up position providing high range and down position providing low range (see Figure 1). FIGURE 1RANGE SHIFT CONTROL SAE J1608 Revised SEP2001 -2- 3.3Compound Range
8、/Splitter PatternSame progression as a straight pattern. However, each gear position offers two or more gear ratios which are selected by means of a splitter-shift control. Ratio selection is such that each position offers a progressive low-high ratio. 3.3.1SPLITTER-SHIFT CONTROLLocated on the side
9、of the shift control adjacent to the driver for thumb operation. Operates in a plane (which is parallel to the top of the shift knob) with the clockwise movement providing high split and counterclockwise movement low split (see Figure 2). Right-hand drive reverses button motion. FIGURE 2SPLITTER-SHI
10、FT CONTROL 4.Positional Identification 4.1Rail BiasingProvide positive identification of the lever to shift rail position. The bias force to be adequate to guard against involuntary engagement of low or reverse gears (see Figure 3). FIGURE 3RAIL BIASING SAE J1608 Revised SEP2001 -3- 4.2Labeling Conv
11、entionFor pattern decals and shift knob bezel. 4.2.1Dedicated starting gear position identified as “low,” or an appropriate abbreviation such as “lo” or “L.” 4.2.2Rail biasing to be indicated by the appropriate arrows (see 4.1). 4.2.3Range shifts to be designated by a horizontal split of the pattern
12、 boxes with the low range gears having a dark background with contrasting light numerals and high range gears having a light background with contrasting dark numerals (see Figure 4). FIGURE 4EXAMPLE OF RANGE SHIFTS 5.Notes 5.1Marginal IndiciaThe change bar (l) located in the left margin is for the c
13、onvenience of the user in locating areas where technical revisions have been made to the previous issue of the report. An (R) symbol to the left of the document title indicates a complete revision of the report. PREPARED BY THE SAE TRUCK AND BUS TRANSMISSION SUBCOMMITTEE OF THE SAE TRUCK AND BUS POW
14、ERTRAIN COMMITTEE SAE J1608 Revised SEP2001 RationaleNot applicable. Relationship of SAE Standard to ISO StandardNot applicable. ApplicationProvide standard shift pattern guidelines for manual transmission shift controls in light, medium, and heavy trucks and buses. Reference SectionThere are no referenced publications specified herein. Developed by the SAE Truck and Bus Transmission Subcommittee Sponsored by the SAE Truck and Bus Powertrain Committee