
Engine management system is mainly composed of sensor
、
electronic control unit
(
ECU
)
and actuator three parts. It controls the basic air intake volume
、
fuel inject volume
and ignition advance angle when then engine is running. The A5 automobile apply the ME7.9.7 electric control system, the constitution is shown as figure 9-2
:
9-2 ME7.9.7 Electric Control System Constitution
Figure
Air intake pressure temp erature sensor
Carbon canister
control Valve
Thr ottle valv e
Accelarate pedal position sensor
Electric fuel pump
Crankshaft position se nsor
Coolant tempe-
rature sensor
Rear o xygen se nsor
Front catalyst
Front oxygen senso r
Spark plug
Fuel distribution
pipe assembly
Phase sensor
Mai n catalyst
1 4
Summary of Contents for A21 2005
Page 10: ...1 A21 ENGINE PDF created with pdfFactory Pro trial version www pdffactory com ...
Page 17: ...8 PDF created with pdfFactory Pro trial version www pdffactory com ...
Page 248: ......
Page 298: ......
Page 301: ... 5 5 8 7 5 0 LDJUDP H SODQDWLRQ LVWULEXWLRQ RI 9DULRXV DUWK 3RLQWV DQG 0DLQ 0RGXOHV ...
Page 303: ... 6 RQQHFWRU 6 5 5 8 7 5 0 211 725 127 8 RQQHFWRU 8 ...
Page 313: ... 12 5 5 8 7 5 0 GMXVWLQJ 6 XVH ER 6HDW DGMXVWLQJ V VWHP ...
Page 323: ... 5 5 8 7 5 0 12 FLJDUHWWH XVH ER V VWHP 1 7 21 ...