Information injection-pump assembly
BOSCH
9 460 613 954
9460613954
ZEXEL
104742-1701
1047421701
ISUZU
8979590091
8979590091

Rating:
Components :
0. | INJECTION-PUMP ASSEMBLY | 104742-1701 |
1. | _ | |
2. | FUEL INJECTION PUMP | 104642-1671 |
3. | NUMBER PLATE | 146978-2700 |
4. | _ | 146672-1720 |
5. | CAPSULE | |
6. | ADJUSTING DEVICE | 146679-0820 |
7. | NOZZLE AND HOLDER ASSY | 105118-6532 |
8. | Nozzle and Holder | 8-97188-521-0 |
9. | Open Pre:MPa(Kqf/cm2) | 18.1{185} |
10. | NOZZLE-HOLDER | 105048-3230 |
11. | NOZZLE | 105017-2280 |
Scheme ###:
1/6. | [1] | 146601-0700 | PACKING RING |
6. | [1] | 146100-0120 | SUPPLY PUMP |
9. | [1] | 146103-0000 | COVER |
10. | [2] | 139104-0000 | FLAT-HEAD SCREW |
12. | [1] | 146200-0820 | DRIVE SHAFT |
12/1. | [1] | 146200-0800 | DRIVE SHAFT |
12/2. | [1] | 146201-0000 | WOODRUFF KEY |
12/3. | [2] | 146202-0100 | DAMPER |
12/4. | [1] | 146203-0000 | TOOTHED GEAR |
17. | [1] | 146204-0000 | PLAIN WASHER |
20. | [1] | 146210-5920 | ROLLER SET |
24. | [1] | 146303-0000 | BEARING PIN |
25. | [1] | 146304-0000 | BEARING PIN |
26. | [1] | 146305-0000 | CLAMPING BAND |
27. | [1] | 146205-0300 | SLOTTED WASHER |
29. | [1] | 146220-5720 | CAM PLATE |
30. | [1] | 146600-0800 | O-RING |
31. | [1] | 146300-4500 | PUMP PLUNGER |
32. | [1] | 146301-0000 | SLIDING PIECE |
33. | [1] | 146603-0700 | SHIM D17.5&7.5T0.60 |
34. | [1] | 146302-3400 | COMPRESSION SPRING |
34B. | [1] | 146302-3300 | COMPRESSION SPRING |
34C. | [1] | 146302-3500 | COMPRESSION SPRING |
35/1. | [0] | 146603-0700 | SHIM D17.5&7.5T0.60 |
35/1. | [0] | 146603-0800 | SHIM D17.5&7.5T0.70 |
35/1. | [0] | 146603-0900 | SHIM D17.5&7.5T0.90 |
35/1. | [0] | 146603-1000 | SHIM D17.5&7.5T1.00 |
35/1. | [0] | 146603-1100 | SHIM D17.5&7.5T1.20 |
35/1. | [0] | 146603-3600 | SHIM D17.5&7.5T2.40 |
36. | [1] | 146600-0800 | O-RING |
37. | [1] | 146310-0700 | COVER |
38. | [2] | 146620-5000 | BLEEDER SCREW |
39. | [1] | 146310-5200 | COVER |
40. | [2] | 146620-5000 | BLEEDER SCREW |
43. | [1] | 146230-0000 | SHIM |
44. | [1] | 146230-0100 | PLAIN WASHER |
45. | [1] | 146231-0001 | SLOTTED WASHER |
47. | [2] | 146233-0000 | SLOTTED WASHER |
48/1. | [1] | 146603-0000 | SHIM D17.0&5.2T0.50 |
48/1. | [1] | 146603-0100 | SHIM D17.0&5.2T0.80 |
48/1. | [1] | 146603-0200 | SHIM D17.0&5.2T1.00 |
48/1. | [1] | 146603-0300 | SHIM D17.0&5.2T1.20 |
48/1. | [1] | 146603-0400 | SHIM D17.0&5.2T1.50 |
48/1. | [1] | 146603-0500 | SHIM D17.0&5.2T1.80 |
48/1. | [1] | 146603-0600 | SHIM D17.0&5.2T2.00 |
48/1. | [1] | 146690-1400 | SHIM D17&5.2T0.9 |
48/1. | [1] | 146690-1500 | SHIM D17&5.2T1.1 |
48/1. | [1] | 146690-1600 | SHIM D17&5.2T1.3 |
48/1. | [1] | 146690-1700 | SHIM D17&5.2T1.4 |
48/1. | [1] | 146690-1800 | SHIM D17&5.2T1.6 |
48/1. | [1] | 146690-1900 | SHIM D17&5.2T1.7 |
48/1. | [1] | 146690-5800 | SHIM D17&5.2T2.1 |
48/1. | [1] | 146690-5900 | SHIM D17&5.2T2.2 |
48/1. | [1] | 146690-6000 | SHIM D17&5.2T2.3 |
48/1. | [1] | 146690-6100 | SHIM D17&5.2T2.4 |
48/1. | [1] | 146690-6200 | SHIM D17&5.2T2.5 |
48/1. | [1] | 146690-6300 | SHIM D17&5.2T2.6 |
48/1. | [1] | 146690-6400 | SHIM D17&5.2T2.7 |
48/1. | [1] | 146690-6500 | SHIM D17&5.2T2.8 |
48/1. | [1] | 146690-6600 | SHIM D17&5.2T2.9 |
48/1. | [1] | 146690-6700 | SHIM D17&5.2T3.0 |
48/1. | [1] | 146690-6800 | SHIM D17&5.2T3.1 |
48/1. | [1] | 146690-6900 | SHIM D17&5.2T3.2 |
48/1. | [1] | 146690-7000 | SHIM D17&5.2T3.3 |
48/1. | [1] | 146690-7100 | SHIM D17&5.2T3.4 |
48/1. | [1] | 146690-7200 | SHIM D17&5.2T0.4 |
48/1. | [1] | 146690-7300 | SHIM D17&5.2T0.6 |
48/1. | [1] | 146690-7400 | SHIM D17&5.2T0.7 |
48/1. | [1] | 146690-7500 | SHIM D17&5.2T1.9 |
48/1. | [1] | 146690-7800 | SHIM D17&5.2T0.2 |
49. | [2] | 146234-0600 | GUIDE PIN |
50. | [1] | 146402-4420 | HYDRAULIC HEAD |
50. | [1] | 146402-4420 | HYDRAULIC HEAD |
50. | [1] | 146402-4420 | HYDRAULIC HEAD |
51. | [1] | 146600-0000 | O-RING |
52/1. | [1] | 146420-0000 | SHIM D9.5&3.0T1.90 |
52/1. | [1] | 146420-0100 | SHIM D9.5&3.0T1.92 |
52/1. | [1] | 146420-0200 | SHIM D9.5&3.0T1.94 |
52/1. | [1] | 146420-0300 | SHIM D9.5&3.0T1.96 |
52/1. | [1] | 146420-0400 | SHIM D9.5&3.0T1.98 |
52/1. | [1] | 146420-0500 | SHIM D9.5&3.0T2.00 |
52/1. | [1] | 146420-0600 | SHIM D9.5&3.0T2.02 |
52/1. | [1] | 146420-0700 | SHIM D9.5&3.0T2.04 |
52/1. | [1] | 146420-0800 | SHIM D9.5&3.0T2.06 |
52/1. | [1] | 146420-0900 | SHIM D9.5&3.0T2.08 |
52/1. | [1] | 146420-1000 | SHIM D9.5&3.0T2.10 |
52/1. | [1] | 146420-1100 | SHIM D9.5&3.0T2.12 |
52/1. | [1] | 146420-1200 | SHIM D9.5&3.0T2.14 |
52/1. | [1] | 146420-1300 | SHIM D9.5&3.0T2.16 |
52/1. | [1] | 146420-1400 | SHIM D9.5&3.0T2.18 |
52/1. | [1] | 146420-1500 | SHIM D9.5&3.0T2.20 |
52/1. | [1] | 146420-1600 | SHIM D9.5&3.0T2.22 |
52/1. | [1] | 146420-1700 | SHIM D9.5&3.0T2.24 |
52/1. | [1] | 146420-1800 | SHIM D9.5&3.0T2.26 |
52/1. | [1] | 146420-1900 | SHIM D9.5&3.0T2.28 |
52/1. | [1] | 146420-2000 | SHIM D9.5&3.0T2.30 |
52/1. | [1] | 146420-2100 | SHIM D9.5&3.0T2.32 |
52/1. | [1] | 146420-2200 | SHIM D9.5&3.0T2.34 |
52/1. | [1] | 146420-2300 | SHIM D9.5&3.0T2.36 |
52/1. | [1] | 146420-2400 | SHIM D9.5&3.0T2.38 |
52/1. | [1] | 146420-2500 | SHIM D9.5&3.0T2.40 |
52/1. | [1] | 146420-2600 | SHIM D9.5&3.0T2.42 |
52/1. | [1] | 146420-2700 | SHIM D9.5&3.0T2.44 |
52/1. | [1] | 146420-2800 | SHIM D9.5&3.0T2.46 |
52/1. | [1] | 146420-2900 | SHIM D9.5&3.0T2.48 |
52/1. | [1] | 146420-3000 | SHIM D9.5&3.0T2.50 |
52/1. | [1] | 146420-3100 | SHIM D9.5&3.0T2.52 |
52/1. | [1] | 146420-3200 | SHIM D9.5&3.0T2.54 |
52/1. | [1] | 146420-3300 | SHIM D9.5&3.0T2.56 |
52/1. | [1] | 146420-3400 | SHIM D9.5&3.0T2.58 |
52/1. | [1] | 146420-3500 | SHIM D9.5&3.0T2.60 |
52/1. | [1] | 146420-3600 | SHIM D9.5&3.0T2.62 |
52/1. | [1] | 146420-3700 | SHIM D9.5&3.0T2.64 |
52/1. | [1] | 146420-3800 | SHIM D9.5&3.0T2.66 |
52/1. | [1] | 146420-3900 | SHIM D9.5&3.0T2.68 |
52/1. | [1] | 146420-4000 | SHIM D9.5&3.0T2.70 |
52/1. | [1] | 146420-4100 | SHIM D9.5&3.0T2.72 |
52/1. | [1] | 146420-4200 | SHIM D9.5&3.0T2.74 |
52/1. | [1] | 146420-4300 | SHIM D9.5&3.0T2.76 |
52/1. | [1] | 146420-4400 | SHIM D9.5&3.0T2.78 |
52/1. | [1] | 146420-4500 | SHIM D9.5&3.0T2.80 |
52/1. | [1] | 146420-4600 | SHIM D9.5&3.0T2.82 |
52/1. | [1] | 146420-4700 | SHIM D9.5&3.0T2.84 |
52/1. | [1] | 146420-4800 | SHIM D9.5&3.0T2.86 |
52/1. | [1] | 146420-4900 | SHIM D9.5&3.0T2.88 |
52/1. | [1] | 146420-5000 | SHIM D9.5&3.0T2.90 |
52/1. | [1] | 146420-5100 | SHIM D9.5&3.0T1.74 |
52/1. | [1] | 146420-5200 | SHIM D9.5&3.0T1.76 |
52/1. | [1] | 146420-5300 | SHIM D9.5&3.0T1.78 |
52/1. | [1] | 146420-5400 | SHIM D9.5&3.0T1.80 |
52/1. | [1] | 146420-5500 | SHIM D9.5&3.0T1.82 |
52/1. | [1] | 146420-5600 | SHIM D9.5&3.0T1.84 |
52/1. | [1] | 146420-5700 | SHIM D9.5&3.0T1.86 |
52/1. | [1] | 146420-5800 | SHIM D9.5&3.0T1.88 |
54. | [4] | 146433-0100 | GASKET D12&6.4T1.00 |
55. | [4] | 146430-7220 | DELIVERY-VALVE ASSEMBLY |
56. | [4] | 146432-0200 | COMPRESSION SPRING |
58. | [4] | 146440-1520 | FITTING |
60. | [4] | 139106-0100 | FLAT-HEAD SCREW |
67. | [1] | 146821-5820 | GOVERNOR COVER |
67/1. | [1] | 146508-6821 | GOVERNOR COVER |
67/2. | [1] | 146515-2520 | CONTROL SHAFT |
67/3. | [1] | 146600-0100 | O-RING |
67/4. | [1] | 139310-0200 | PLAIN WASHER |
67/13. | [1] | 013020-6040 | UNION NUT M6P1H5 |
67/14. | [1] | 146621-1700 | UNION NUT |
67/15. | [1] | 146526-2800 | BLEEDER SCREW |
67/16. | [1] | 146526-2800 | BLEEDER SCREW |
67/23. | [1] | 146628-9200 | BRACKET |
67/24. | [2] | 139006-4500 | BLEEDER SCREW |
67/26. | [1] | 146932-2900 | BRACKET |
67/78. | [1] | 146600-4400 | SEAL RING |
67/98. | [1] | 139006-4500 | BLEEDER SCREW |
67/100. | [1] | 146628-9000 | BRACKET |
67/102. | [1] | 146629-5920 | BRACKET |
67/200. | [1] | 139308-0300 | PLAIN WASHER |
67/201. | [1] | 146545-3400 | THREADED PIN L53.00 |
67/201B. | [1] | 146545-3500 | THREADED PIN L55.00 |
67/201C. | [1] | 146545-3600 | THREADED PIN L57.00 |
67/202. | [1] | 139208-0900 | UNION NUT |
67/203. | [1] | 146600-1200 | O-RING |
72. | [1] | 146832-6920 | CONTROL LEVER |
72B. | [1] | 146832-7020 | CONTROL LEVER |
72C. | [1] | 146832-7120 | CONTROL LEVER |
72D. | [1] | 146832-7220 | CONTROL LEVER |
73. | [1] | 014110-6440 | LOCKING WASHER |
75. | [1] | 013020-6040 | UNION NUT M6P1H5 |
95. | [1] | 146865-7220 | FULCRUM LEVER |
104. | [2] | 146568-0000 | SLOTTED SPRING PIN |
105. | [2] | 026508-1140 | GASKET D11.4&8.2T1 |
106. | [2] | 146588-0500 | COILED SPRING |
107. | [1] | 146569-0300 | UNION NUT |
108. | [1] | 146570-0100 | GOVERNOR SHAFT |
109. | [1] | 146600-0400 | O-RING |
110/1. | [1] | 146571-0000 | SHIM D20.2&8.3T1.05 |
110/1. | [1] | 146571-0100 | SHIM D20.2&8.3T1.25 |
110/1. | [1] | 146571-0200 | SHIM D20.2&8.3T1.45 |
110/1. | [1] | 146571-0300 | SHIM D20.2&8.3T1.65 |
110/1. | [1] | 146571-0400 | SHIM D20.2&8.3T1.85 |
110/1. | [1] | 146571-0500 | SHIM D20.2&8.3T1.15 |
110/1. | [1] | 146571-0600 | SHIM D20.2&8.3T1.35 |
110/1. | [1] | 146571-0700 | SHIM D20.2&8.3T1.55 |
110/1. | [1] | 146571-0800 | SHIM D20.2&8.3T1.75 |
111. | [1] | 146602-0600 | PLAIN WASHER D20&8.4T1.40 |
112. | [1] | 146572-0020 | FLYWEIGHT ASSEMBLY |
114. | [1] | 146602-0500 | PLAIN WASHER D17&6.4T1.60 |
115. | [1] | 146975-4200 | SLIDING SLEEVE |
116. | [1] | 146576-0200 | CAP |
117/1. | [1] | 146577-1800 | PLUG L2.10 |
117/1. | [1] | 146577-1900 | PLUG L2.30 |
117/1. | [1] | 146577-2000 | PLUG L2.50 |
117/1. | [1] | 146577-2100 | PLUG L2.70 |
117/1. | [1] | 146577-2200 | PLUG L2.90 |
117/1. | [1] | 146577-2300 | PLUG L3.10 |
117/1. | [1] | 146577-2400 | PLUG L3.30 |
117/1. | [1] | 146577-2500 | PLUG L3.50 |
117/1. | [1] | 146577-2600 | PLUG L3.70 |
117/1. | [1] | 146577-2700 | PLUG L3.90 |
117/1. | [1] | 146577-2800 | PLUG L4.10 |
117/1. | [1] | 146577-2900 | PLUG L4.30 |
117/1. | [1] | 146577-3000 | PLUG L4.50 |
117/1. | [1] | 146577-3100 | PLUG L4.70 |
117/1. | [1] | 146577-3200 | PLUG L4.90 |
117/1. | [1] | 146577-3300 | PLUG L5.10 |
117/1. | [1] | 146577-6700 | PLUG L2.2 |
117/1. | [1] | 146577-6800 | PLUG L2.4 |
117/1. | [1] | 146577-6900 | PLUG L2.6 |
117/1. | [1] | 146577-7000 | PLUG L2.8 |
117/1. | [1] | 146577-7100 | PLUG L3.0 |
117/1. | [1] | 146577-7200 | PLUG L3.2 |
117/1. | [1] | 146577-7300 | PLUG L3.4 |
117/1. | [1] | 146577-7400 | PLUG L3.6 |
117/1. | [1] | 146577-7500 | PLUG L3.8 |
117/1. | [1] | 146577-7600 | PLUG L4.0 |
117/1. | [1] | 146577-7700 | PLUG L4.2 |
117/1. | [1] | 146577-7800 | PLUG L4.4 |
117/1. | [1] | 146577-7900 | PLUG L4.6 |
117/1. | [1] | 146577-8000 | PLUG L4.8 |
117/1. | [1] | 146577-8100 | PLUG L5.0 |
117/1. | [1] | 146877-0000 | PLUG L5.2 |
117/1. | [1] | 146877-0100 | PLUG L5.3 |
117/1. | [1] | 146877-0200 | PLUG L5.4 |
117/1. | [1] | 146877-0300 | PLUG L5.5 |
117/1. | [1] | 146877-4700 | PLUG |
117/1. | [1] | 146877-4800 | PLUG |
117/1. | [1] | 146877-4900 | PLUG |
117/1. | [1] | 146877-5000 | PLUG |
120. | [1] | 146879-2920 | RETAINING PIN |
122. | [1] | 146580-3300 | GOVERNOR SPRING |
123. | [4] | 139106-0200 | FLAT-HEAD SCREW |
130. | [1] | 146421-1120 | CAPSULE |
130/2. | [1] | 139508-0200 | GASKET D11.4&8.2T1 |
130/3. | [1] | 146422-0300 | BLEEDER SCREW |
130/4. | [1] | 146600-0500 | O-RING |
133. | [1] | 146600-0600 | O-RING |
134. | [1] | 146600-0700 | O-RING |
135. | [1] | 146110-0720 | CONTROL VALVE |
135/5. | [1] | 146114-0000 | SPRING WASHER |
136. | [1] | 146120-1520 | OVER FLOW VALVE |
137. | [2] | 139512-0500 | GASKET |
138. | [1] | 146605-5820 | INLET UNION |
159. | [1] | 146628-7220 | PLATE |
160. | [1] | 146625-8020 | PLATE |
205. | [1] | 029470-4030 | WOODRUFF KEY |
220. | [1] | 146594-0500 | COILED SPRING |
240. | [1] | 146650-1220 | PULLING ELECTROMAGNET |
240/8. | [1] | 146600-1700 | O-RING |
242. | [1] | 146658-7320 | WIRE |
243. | [1] | 146621-4901 | UNION NUT |
245. | [2] | 139512-0500 | GASKET |
246. | [1] | 027412-2440 | EYE BOLT |
247. | [1] | 146609-4620 | INLET UNION |
260. | [1] | 146611-0720 | BRACKET |
261. | [2] | 146621-4700 | UNION NUT |
264. | [1] | 016500-5010 | O-RING |
800S. | [1] | 146009-9420 | PUMP HOUSING |
800S/1/6. | [1] | 146601-0700 | PACKING RING |
804S. | [1] | 146232-0720 | COMPRESSION SPRING |
805S. | [1] | 146574-0120 | PARTS SET |
810S. | [1] | 146600-1120 | REPAIR SET |
821S. | [1] | 146210-5720 | ROLLER SET |
835S. | [1] | 146598-1000 | CAP |
836S/1. | [1] | 146598-0600 | CAP L18 |
836S/1. | [1] | 146598-0700 | CAP L21 |
836S/1. | [1] | 146598-0800 | CAP L24 |
836S/1. | [1] | 146598-0900 | CAP L27 |
903. | [1] | 146672-1720 | PULSE GENERATOR |
903/2. | [1] | 146600-1300 | O-RING &13W1.9 |
905. | [1] | 146679-0820 | ACTUATOR |
906. | [1] | 146978-2700 | NAMEPLATE |
912. | [2] | 139006-6600 | BLEEDER SCREW |
Include in #2:
104742-1701
as INJECTION-PUMP ASSEMBLY
Cross reference number
Zexel num
Bosch num
Firm num
Name
Information:
(1) Oil cooler base bypass valve. Opening pressure ... 296 kPa (43 psi)(2) Base assembly. Tighten stud that holds filter assembly (3) to a torque of ... 68 7 N m (50 5 lb ft)(3) Filter assembly.(4) Cover. Tighten to a torque of ... 60 10 N m (44 7 lb ft)(5) Seal. Lubricate seal with lubricant being sealed.
Section A-A. Oil Filter Bypass Valve.The bypass opening pressure differential is 170 kPa (25 psi).(6) Seal.(7) Spring (8M3182): Assembled length ... 63.5 mm (2.50 in)Load assembled length ... 36.5 N (8.92 lb)Free length after test ... 91.7 mm (3.61 in)Outside diameter ... 20.6 mm (.81 in)(8) Seal.(9) Plunger.
Section B-B. Oil Pump Bypass Valve.(10) Spring (2N6005): Assembled length ... 96.52 mm (3.800 in)Load at assembled length ... 92.52 N (20.817 lb)Operating length (min) ... 45.72 mm (1.800 in)Load at min operating length ... 257.55 N (57.949 lb)Free length after test ... 124.71 mm (4.910 in)Outside diameter ... 21.84 mm (.860 in)(11) Valve.(12) Seal.(13) Seal.
Section C-C. High Pressure Relief Valve.The relief pressure is 696 kPa (101 psi).(14) Spacer.(15) Spring (1A2170): Assembled length ... 21.43 mm (.844 in)Load at assembled length ... 198.03 13.35 N (44.500 3.000 lb)Free length after test ... 31.00 mm (1.220 in)Outside diameter ... 19.60 mm (.772 in)(16) Seal.
Oil Cooler Bypass Valve.(17) Minimum stroke ... 8.4 mm (.33 in)(18) Length of valve fully compressed ... 44.2 1 mm (1.70 .04 in)(19) Length of valve fully extended ... 52.6 1 mm (2.10 .04 in)(B) Position "B".Valve Data: Start to close temperature ... 100 to 102.8° C (212 to 217° F)Position "B" temperature activation ... 111.1° C (232° F)Position "B" bypass opening pressure differential ... 155 17 kPa (22 2 psi)Fail safe activation temperature ... 126.7° C (260° F) Unit will stroke to and remain at position "B" at failsafe activation temperature.
Section A-A. Oil Filter Bypass Valve.The bypass opening pressure differential is 170 kPa (25 psi).(6) Seal.(7) Spring (8M3182): Assembled length ... 63.5 mm (2.50 in)Load assembled length ... 36.5 N (8.92 lb)Free length after test ... 91.7 mm (3.61 in)Outside diameter ... 20.6 mm (.81 in)(8) Seal.(9) Plunger.
Section B-B. Oil Pump Bypass Valve.(10) Spring (2N6005): Assembled length ... 96.52 mm (3.800 in)Load at assembled length ... 92.52 N (20.817 lb)Operating length (min) ... 45.72 mm (1.800 in)Load at min operating length ... 257.55 N (57.949 lb)Free length after test ... 124.71 mm (4.910 in)Outside diameter ... 21.84 mm (.860 in)(11) Valve.(12) Seal.(13) Seal.
Section C-C. High Pressure Relief Valve.The relief pressure is 696 kPa (101 psi).(14) Spacer.(15) Spring (1A2170): Assembled length ... 21.43 mm (.844 in)Load at assembled length ... 198.03 13.35 N (44.500 3.000 lb)Free length after test ... 31.00 mm (1.220 in)Outside diameter ... 19.60 mm (.772 in)(16) Seal.
Oil Cooler Bypass Valve.(17) Minimum stroke ... 8.4 mm (.33 in)(18) Length of valve fully compressed ... 44.2 1 mm (1.70 .04 in)(19) Length of valve fully extended ... 52.6 1 mm (2.10 .04 in)(B) Position "B".Valve Data: Start to close temperature ... 100 to 102.8° C (212 to 217° F)Position "B" temperature activation ... 111.1° C (232° F)Position "B" bypass opening pressure differential ... 155 17 kPa (22 2 psi)Fail safe activation temperature ... 126.7° C (260° F) Unit will stroke to and remain at position "B" at failsafe activation temperature.