{"id":3012,"date":"2023-11-19T12:48:57","date_gmt":"2023-11-19T11:48:57","guid":{"rendered":"https:\/\/mbci.mackuz.ovh\/?p=3012"},"modified":"2023-11-19T12:48:57","modified_gmt":"2023-11-19T11:48:57","slug":"checking-boost-pressure-of-turbocharger-2","status":"publish","type":"post","link":"https:\/\/mbci.mackuz.ovh\/index.php\/2023\/11\/19\/checking-boost-pressure-of-turbocharger-2\/","title":{"rendered":"Checking boost pressure of turbocharger"},"content":{"rendered":"

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09\u2014425 Checking boost pressure of turbocharger<\/strong><\/div>\n<\/div>\n<\/td>\n
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Test value<\/strong><\/div>\n<\/div>\n<\/td>\n
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Boost pressure at full-load, driving<\/div>\n
range position ,,L” or ,,S” and n = 4000\/min<\/div>\n<\/div>\n<\/td>\n
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0.7-0.8 bar gauge pressure<\/div>\n<\/div>\n<\/td>\n
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Special tool<\/div>\n<\/div>\n<\/td>\n
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Tester 0\u20141.6 bar gauge pressure<\/div>\n<\/div>\n<\/td>\n
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617 589 02 21 00<\/div>\n<\/div>\n<\/td>\n
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Conventional tester<\/strong><\/div>\n<\/div>\n<\/td>\n
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Digital tester (or revolution counter installed in vehicle)<\/div>\n<\/div>\n<\/td>\n
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e.g. Bosch, MOT 001.03<\/div>\n<\/div>\n<\/td>\n
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Checking<\/strong><\/div>\n<\/div>\n<\/td>\n
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A. On boost air pipe<\/div>\n<\/div>\n<\/td>\n
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Connect boost pressure tester to intake manifold, unscrewing plug for this purpose.<\/div>\n
Note: <\/strong>Tester connecting thread M 10 x 1.<\/div>\n<\/div>\n<\/td>\n
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B. On switchover valve<\/div>\n<\/div>\n<\/td>\n
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Connect boost air tester to switchover valve with Y-distributor, output of switchover valve.<\/div>\n<\/div>\n<\/td>\n
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1\u00a0 \u00a0 \u00a0Pressure line to boost air pipe<\/div>\n
2\u00a0 \u00a0Switchover valve<\/div>\n
3\u00a0 \u00a0 Pressure line to ALDA capsule<\/div>\n<\/div>\n<\/td>\n
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09.8-425\/1 F 3<\/div>\n<\/div>\n<\/td>\n
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1\u00a0 \u00a0Test on dynamometer.<\/div>\n
Drive vehicle in driving range ,,S” at full-load and n = 4000\/min. The prescribed boost pressure must be obtained.<\/div>\n
Check the trouble-shooting hints if system fails to reach specified boost pressure.<\/div>\n
2\u00a0 \u00a0Road test.<\/div>\n
Note: <\/strong>The full-load test must be kept as short as possible because the total driving energy has to be absorbed by the vehicle’s own brakes.<\/div>\n
Road-test the vehicle in driving range ,,L” or ,,S” at full-load and n = 4000\/min, placing tester in vehicle interior for this purpose. Accelerate to full throttle while holding at 4000\/min with the aid of service brakes (No. 2 in illustration). The prescribed boost pressure must be reached.<\/div>\n
Check the trouble-shooting hints if system fails to reach specified boost pressure.<\/div>\n<\/div>\n<\/td>\n
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Compressor inlet (fresh air) Compressor outlet (pre-compressed air)<\/div>\n<\/div>\n<\/td>\n
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Exhaust gases toward turbine wheel Exhaust gas outlet<\/div>\n<\/div>\n<\/td>\n
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Function diagram<\/div>\n
2 Compressor wheel\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a011<\/div>\n
7\u00a0 \u00a0 Turbine wheel\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 14<\/div>\n
8\u00a0 \u00a0 Boost pressure control valve\u00a0 \u00a0 \u00a0 \u00a0 \u00a015<\/div>\n
9\u00a0 \u00a0 Connecting hose\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 20 10 Exhaust manifold\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 21<\/div>\n<\/div>\n<\/td>\n
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Boost air pipe\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0a<\/div>\n
ALDA-capsule\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0b<\/div>\n
Pressure line\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 c<\/div>\n
Pressure switch boost air pipe Switchover valve overload protection<\/div>\n<\/div>\n<\/td>\n
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Fuse terminal 15<\/div>\n
Switching unit overload protection<\/div>\n
Exhaust gas toward bypass duct<\/div>\n<\/div>\n<\/td>\n
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09.8-425\/2 F 3<\/div>\n<\/div>\n<\/td>\n
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    09\u2014425 Checking boost pressure of turbocharger   Test value   Boost pressure at full-load, driving range position ,,L” or ,,S” and n = 4000\/min 0.7-0.8 bar gauge pressure   Special tool   fY-i   Tester 0\u20141.6 bar gauge pressure 617 589 02 21 00   j -\u00a3& no   Conventional tester   Digital tester (or revolution counter installed in vehicle) e.g. Bosch, MOT 001.03   Checking A. On boost air pipe Connect boost pressure tester to intake manifold, unscrewing plug for this purpose. Note: Tester connecting thread M 10 x 1.   B. On switchover valve Connect boost air tester to switchover valve with Y-distributor, output of switchover valve. 1\u00a0 \u00a0 \u00a0Pressure line to boost air pipe 2\u00a0 \u00a0Switchover valve 3\u00a0 \u00a0 Pressure line to ALDA capsule   09.8-425\/1 F 3       1\u00a0 \u00a0Test on dynamometer. Drive vehicle in driving range ,,S” at full-load and n = 4000\/min. The prescribed boost pressure must be obtained. Check the trouble-shooting hints if system fails to reach specified boost pressure. 2\u00a0 \u00a0Road test. Note: The full-load test must be kept as short as possible because the total driving energy has to be absorbed by the vehicle’s own brakes. Road-test the vehicle in driving range ,,L” or ,,S” at full-load and n = 4000\/min, placing tester in vehicle interior for this purpose. Accelerate to full throttle while holding at 4000\/min with the aid of service brakes (No. 2 in illustration). The prescribed boost pressure must be reached. Check the trouble-shooting hints if system fails to reach specified boost pressure.     Compressor inlet (fresh air) Compressor outlet (pre-compressed air) Exhaust gases toward turbine wheel Exhaust gas outlet   Function diagram 2 Compressor wheel\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a011 7\u00a0 \u00a0 Turbine wheel\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 14 8\u00a0 \u00a0 Boost pressure control valve\u00a0 \u00a0 \u00a0 \u00a0 \u00a015 9\u00a0 \u00a0 Connecting hose\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 20 10 Exhaust manifold\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 21 Boost air pipe\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0a ALDA-capsule\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0b Pressure line\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 c Pressure switch boost air pipe Switchover valve overload protection Fuse terminal 15 Switching unit overload protection Exhaust gas toward bypass duct   09.8-425\/2 F 3        <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[50,44],"tags":[],"class_list":["post-3012","post","type-post","status-publish","format-standard","hentry","category-air-cleaner-exhaust-gas-turbocharger","category-om617"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t