1、I INCH-POUND( MIL-DTL-453 34E 30 Seotember 1998 SUPERSEDING 23 July 1997 MIL-PRF-45 3 34D DETAIL SPECIFICATION COMPRESSOR ASSEMBLIES, AIRBRAKE SYSTEM; WHEELED VEHICLE This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specifi
2、cation covers eight types of air compressors for airbrake systems of military wheeled vehicles. This specication also covers accessory governors and air cleaners for type I and type II compressors (see 6.1). 1.2 Classification. 1.2.1 Reciprocating cornmessors. Reciprocating compressors will be of th
3、e foilowing types, with normally rated displacement in cubic feet per minute (f13/min) at 1250 revolutions per minute (rpm), as specified (see 6.2): Type I Type II Type III Type IV -7.25 cubic feet per minute (ft3/min) (3.4 liters per second (L/s), air-cooled, engine-lubricated7 reciprocating compre
4、ssor. - 12 ft3/min (5.6 L/s), air-cooled, engine-lubricated, reciprocating compressor. -7.25 fi3/min (3.4 Ws), water-cooled, engine or self-lubricated, reciprocating compressor. -12 ft3/min (5.6 Us), water-cooled, engine or self-lubricated, reciprocating compressor. Beneficial comments (recommendati
5、ons, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: U.S. Army Tank-automotive and Armaments Command, ATTN: AMSTA-TR-E/BLUE, Warren, MI 48397-5000, by usins the Standardization Document Improvement Proposai D Form 1426) appearing at
6、 the end of this document, or by letter. AMSC N/A FSC 2530 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- M IL-B TL- 45 33 4E 9999906 2075819 511 MIL-DTL-453 34E Type
7、 V - 24 fi3/ I I I I I 0.28 I I Air Flow Direction 0.89 i. D. MAX NOTES: 1. Pipe thread must extend into air flow opening and may be located at either end of the positions shown. 2. Unless otherwise specified, dimensions are in inches. Tolerances: I1/64 on fiactions and 20.005 on decimals. FIGURE 3.
8、 Air cleaner, intake: compressor. 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- flIL-BTL-45334E 9999906 2075827 698 = Part Identisting Number (PIN) Prior MS part number M45334-10 MS53006-1 MIL-DTL-45 3 34E Drawing number 10900525 II I :I: I 0.33
9、5 iO.015 DIA 2 Holes SeeNote6 3.31 A L2.31 -J NOTES: 1. 2. 3. 4. 5. 6. 7. 8. 9. Pressure settings: Governors shall be capable of adjustment within a pressure range of 85 to 140 psi (586 to 965 ma) cut-out pressures. Unless othekse specified, governors shall be factory preset to cut-in at 105 to 110
10、psi (723 to 758 Wa), and cut-out at 120 to 140 psi (827 to 965 Ha). Governors shal have a minimum of one (1) reservoir port and two (2) unloader ports, Au ports, except one (1) reservoir and one (1) unloader, shall be fitted with metallic rysea (NPTF) pipe plugs. Unplugged ports shall be fitted with
11、 closures to prevent intrusion of dust and moisture and to prevent damage to threads. Provision shaU be made for governor to exhaust to atmosphere. Governors shall have a minimum of two (2) mounting holes located as shown. Additional mounting holes shall be optional. Port identification shall be mar
12、ked with letters of 0.09 minimum height by means of steel stamping, castuig, or moldmg. All ports shad be tapped 1/8-27 NPTF. Unless otherwise specihl, dimensions are in inches. Tolerance: ?U64 on fractions. additional ports shall be optional. FIGURE 4. Governor assemblv: air brake for tactical vehi
13、cles. 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-DTL-45334E = 9999906 2075828 524 9 Speed rpm 600 1200 1800 2400 MIL-DTL-45334E Time, seconds per 1000 in3 TypeIandIII TypeIIandIV TypeV TypeVIandVII Typen1 105 67 36 129 87 55 33 17 50 36
14、40 24 13 44 24 35 21 11 26 20 3.4.1.5 Pressure buildup time. The pressure buildup time from O to 100 psig (690 Na) shall not exceed that specified in table III (see 4.5.3.5). 3.4.2 Governor performance. 3.4.2.1 Pressure settings. Pressure settings and tolerances shall be as specified on figure 4 or
15、on the applicable drawing (see 4.5.4.1). 3.4.2.2 Life. The governor shall withstand 100 O00 cycles of cut-in and cut-out operation (see 4.5.4.2). 3.4.3 Air cleaner Performance. 3.4.3.1 Air flow restrictions. The static pressure drop across the air cleaner shall not exceed 12 inches (in.) (30.48 cent
16、imeters (an) of water at rated air flow of applicable compressor (see 4.5.5.2). 3.4.3.2 Efficiencv. The efficiency of the air cleaner shall not be less than 95 percent (see 4.5.5.3). 3.4.3.3 Dust capacity. The air cleaner shall have a minimum dust capacity of 15 grams (g) of coarse dust, without exc
17、eeding a restriction of 20 in. (50.8 cm) ofwater (see 4.5.5.4). 3.4.4 Environmental requirements. For fungus resistance, corrosion resistance, vibration, and shock testing, accessories may be installed on the compressor and tested as a single unit (see 4.5.6). 3.4.4.1 Fun-s resistance. Compressor, g
18、overnor, and air cleaner shail exhibit no deterioration after undergoing procedure specified in 4.5.6.1. 3.4.4.2 Corrosion resistance. Compressor, governor, and air cleaner shall exhibit no corrosion after undergoing procedure specified in 4.5.6.2. 11 Provided by IHSNot for ResaleNo reproduction or
19、networking permitted without license from IHS-,-,-8 MIL-DTL-453 34E 3.4.4.3 Vibration resistance. Compressor, governor, and air cleaner shall operate as in intended use after undergoing procedure specified in 4.5.6.3. 3.4.4.4 Shock resistance. Compressor, governor, and air cleaner shall operate as i
20、n intended use after undergoing procedure specified in 4.5.6.4. 3.5 Finish. Unless otherwise specified, all interior metal surfaces, other than the shaft and mounting flange, shall be treated and painted in accordance with the standard practice of the manufacturer. When specified (see 6.2), the fini
21、sh coat shall be forest green enamel (see 4.5.2). 3.6 Identification markings. The complete compressor and each major component shall be marked as specified on applicable drawings (see 4.5.2). If not specified on the applicable drawing, marking shall include: a. Manufacturers identification. b. Nati
22、onal Stock Number (NSN). c. Part of Identifjmg Number (PIN). 4. VERIFICATION 4.1 Classification of inspections. The inspection requirements specified herein are classified as follows: a. First article inspection (see 4.3). b. Conformance inspections (see 4.4). 4.2 Inspection conditions. Unless other
23、wise specified (see 6.2), all inspections shall be conducted under the following conditions: a. Air temperature: 77 i 10 degrees Fahrenheit (“F) (25 25.5 degrees Celsius (OC). b. Barometric pressure: 28.5 (+2, - 3) in. of mercury (Hg) (96.24 (+6.75, -10.13) Ha). c. Relative humidity: 50 & 30 percent
24、. 4.3 First article inspection. First article inspection shall be preformed on three compressors of each type or three compressor accessories when a first article is required. Inspection shall consist of examination for the defects specified in table IV and testing as specified in table V. 4.3.1 Exa
25、mination. Each sample selected in accordance with 4.4.1.2 shall be examined and shall be free from any defects as listed in table IV. 12 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. Category Critical Maior: 101 Minor: 201 202 203 - USE=! MlL-DTL
26、453 34E TABLE IV. Classification of defects. Defect None Dimensions affecting interchangeability, not within tolerance (see 3.3.1). Dimensions not affecting interchangeability not within Improper finish (see 3.5). Improper marking (see 3.6). andard Inspection Equipment. tolerance (see 3.3). Method o
27、f examination SIE I/ SIE Visual Visual 4.4 Conformance inspections. Conformance inspection shall include the examinations of 4.4.2 (see table IV) and the test of 4.5.3.5, 4.5.4.1 or 4.5.5.2, as applicable (see table V). Compressor 4,B,&C A,BY&C A,B,&C A A B B B B B B B B B B C C C C C TABLE V. Class
28、i Title Power input oil flow Discharge air temperature Life test Pressure buildup time Fungus Power input oil flow Discharge air temperature Pressure buildup time Vibration Power input oil flow Discharge air temperature Pressure buildup time Corrosion Power input Oil flow Discharge air temperature P
29、ressure buildup time ation of ins Require- ment 3.4.1.1 3.4.1.2 3.4.1.3 3.4.1.4 3.4.1.5 3.4.4.1 3.4.1.1 3.4.1.2 3.4.1.3 3.4.1.5 3.4.4.3 3.4.1.1 3.4.1.2 3.4.1.3 3.4.1.5 3.4.4.2 3.4.1.1 3.4.1.2 3.4.1.3 3.4.1.5 ictions. Inspec- tion 4.5.3.1 4.5.3.2 4.5.3.3 4.5.3.4 4.5.3.5 4.5.6.1 4.5.3.1 4.5.3.2 4.5.3.
30、3 4.5.3.5 4.5.6.3 4.5.3.1 4.5.3.2 4.5.3.3 4.5.3.5 4.5.6.2 4.5.3.1 4.5.3.2 4.5.3.3 4.5.3.5 First irticle X X X X X X X X X X X X X X X X X X X X Confor- mance X 13 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Compressor C C C C C ivernc 4B&C A A B
31、B B B C C C C Air cleaner 4B,&C A A B B B B C C C C MIL-DTL-45334E m 9999906 2075833 O39 = MIL-DTL-45 3 3 4E TABLE V. Classificatior Title Shock Power input Oil flow Discharge air temperature Pressure buildup time Pressure setting Life test Pressure setting Fungus Pressure setting Vibration Pressure
32、 setting Corrosion Pressure setting Shock Pressure setting Air flow restriction Efficiency Dust capacity Fungus Air flow restriction Vibration Air flow restriction Corrosion Air flow restriction Shock Air flow restriction If inspectio Require- ment 3.4.4.4 3.4.1.1 3.4.1.2 3.4.1.3 3.4.1.5 3.4.2.1 3.4
33、.2.2 3.4.2.1 3.4.4.1 3.4.2.1 3.4.4.3 3.4.2.1 3.4.4.2 3.4.2.1 3.4.4.4 3.4.2.1 3.4.3.1 3.4.3.2 3.4.3.3 3.4.4.1 3.4.3.1 3.4.4.3 3.4.3.1 3.4.4.2 3.4.3.1 3.4.4.4 3.4.3.1 j - Contir Inspec- tion 4.5.6.4 4.5.3.1 4.5.3.2 4.5.3.3 4.5.3.5 4.5.4.1 4.5.4.2 4.5.4.1 4.5.6.1 4.5.4.1 4.5.6.3 4.5.4.1 4.5.6.2 4.5.4.1
34、 4.5.6.4 4.5.4.1 4.5.5.2 4.5.5.3 4.5.5.4 4.5.6.1 4.5.5.2 4.5.6.3 4.5.5.2 4.5.6.2 4.5.5.2 4.5.6.4 4.5.5.2 A. First article X X X X X X X X X X X X X X X X X X X X X X X X X X X Confor- mance X X 4.4.1 Samling. Samples for conformance inspection shd be selected in accordance with ANSUASQC 21.4. 4.5 Me
35、thods of inspection. 4.5.1 Materials. Conformance to 3.2 shall be determined by inspection of contractor records providing proof or certification that materials conform to requirements. Applicable 14 . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
36、YIL-DTL-45334E m Ob 2075832 T55 m MIL-DTL4 5 3 34E records shall include drawings, specifications, design data, receiving inspection records, processig and quality control standards, vendor catalogs and certifications, industry standards, test reports, and rating data. 4.5.2 Defects. Conformance to
37、3.3 and 3.5 through 3.6, shall be determined by examination for the defect listed in table IV. Examination shall be visual, tactile, or by measurement with standard inspection equipment. 4.5.3 Compressor performance tests. Unless otherwise specified herein, the compressor shall be tested for perform
38、ance with a discharge pressure of 100 psig (690 Wa), at speeds of 600, 1200, 1800 and 2400 rpm. Tests shall be made in accordance with table VI. The compressor shall be allowed to stabilize to ambient air temperature as specified in 4.2 for at least one hour prior to start of test. Tests shall be ru
39、n and data recorded progressively fiom lowest to highest specified test speeds. At each test speed, discharge temperature shall be dowed to stabilize until the rate of temperature change does not exceed 1F (0.5“C) per minute, before the data is recorded. TABLE VI. Test deviations and fluctuations. I
40、 Variable I Deviationvalue I From value Discharge pressure Oil temperature Oil pressure Cooling air SPd Coolant 100 psig (690 Da) 140F (6OOC) 37.5 psig (259 kPa) 500 ft3/min (236 L/s) - - 5% 3 ?o 10F (5.5“C) 2.5 psig (17 Da) 20 fi3/min (9.4 L/s) 18 gal/min (1.13 L/s During testing, the rate of oil f
41、low, air temperature and pressure at the compressor discharge, and power input shall be measured and recorded at each speed. 4.5.3.1 Power inpt test. While operating as specified in4.5.3, power input to the compressor shall be measured and recorded at 2400 rpm, and 100 psig (690 kPa) load. Test shal
42、l be repeated at no load. Maximum horsepower input shall not exceed value specified in table I to determine conformance to 3.4.1.1. 4.5.3.2 Oil flow test. While operating as specified in 4.5.3, oil flow at 1775-1825 rpm, and 37.5 psig (259 Wa), shall be measured and recorded. Values shall not exceed
43、 those specified to determine to 3.4.1.2. 15 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-flIL-DTL-45334E 999990b 2075833 991 Speed, rpm 1800 MIL-DTL-45334E Time, hours 17 4.5.3.3 Discharne air temperature test. While operating as specified in 4.6
44、.1, discharge air temperature shall be measured and recorded. Values shall not exceed those specified to determine conformance to 3.4.1.3. 2400 O (idle) 4.5.3.4 Life test. To determine conformance to 3.4.1.4, the compressor shall be cycled for 1000 hours in accordance with table VII. During the comp
45、lete life test compressors shall be operated at no load and 100 psig (690 kPa) in alternate cycles. The rate of oil consumption (including leakage) shall be determined each 100 hours during the last 800 hours. The compressor may be driven by a gear drive, a coupling, or a belt drive. Belt drive shal
46、l produce a torque of 240 -0 inch-pounds (in-lb), (27.12 23.4 Newton-meters (N-m), on the crankshaft toward the compressor base measured from the centerline of the compressor. If the belt drive is not used, this torque shall be maintained on the crankshaft toward the base of the compressor. 6 1 TABL
47、E VII. Life cycle test. 4.5.3.5 Pressure buildup time test. The compressor shall be driven, loaded, at a speed of 600 rpm for a half hour when it is a reciprocating type, or for 15 minutes for a rotating type. The compressor shall then be connected to discharge into a tank with a capacity of 2000 cu
48、bic inches (in3) +5 percent. The time required for the compressor to raise the tank pressure to 100 psig (690 Ha), and the temperature of air at 100 psig (690 Wa), shall be recorded. The test shall be repeated at compressor speeds of 1200, 1800, and 2400 rpm, except the initial warm-up at each speed
49、 is not required. The pressure buildup time, in seconds per 1000 in. of reservoir volume, shall be computed to determine conformance to 3.4.1.5. 4.5.4 Governor tests. 4.5.4.1 Pressure settings test. To determine conformance to 3.4.2.1, average pressure shall be obtained as follows: The governor shall be conditioned at temperatures of 125OF 25F (5 1.6 -.Soc) for 24 hours, and -65 +5“F (-53 22.8“C)
