DESCRIPTION AND OPERATION
Page 63
High-Pressure Fuel System
The high-pressure fuel system (Figure 71) is
designed to provide fuel to the combustion
chamber under high pressure. In this system, unit
pumps (one per cylinder) with operating
pressures of 26,000 psi are used for this purpose.
These high pressures, along with an extended
timing range and optimized timing control,
provide excellent performance.
Fuel is supplied to each of the unit pumps by the
fuel supply gallery in the cylinder block. The high
pressure required for fuel injection is generated
by a pump plunger (10 mm diameter, 18 mm
stroke), which is actuated by a roller cam follower
(tappet) driven by the engine camshaft. The
volume of fuel delivered to each cylinder is
precisely metered by a solenoid mounted on
each of the unit pumps, which responds to
signals from the V-MAC III EECU. The
pressurized fuel is delivered to the injector
nozzles by individual external fuel injector lines.
71
Figure 71 — High-Pressure Fuel System
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Summary of Contents for ASET AC
Page 6: ...TABLE OF CONTENTS Page iii TABLE OF CONTENTS 5 111 bk Page iii Monday July 10 2006 2 26 PM...
Page 14: ...INTRODUCTION Page 1 INTRODUCTION 5 111 bk Page 1 Monday July 10 2006 2 26 PM...
Page 23: ...Page 10 NOTES 5 111 bk Page 10 Monday July 10 2006 2 26 PM...
Page 96: ...COMPONENT LOCATOR Page 83 COMPONENT LOCATOR 5 111 bk Page 83 Monday July 10 2006 2 26 PM...
Page 99: ...Page 86 NOTES 5 111 bk Page 86 Monday July 10 2006 2 26 PM...
Page 100: ...TROUBLESHOOTING Page 87 TROUBLESHOOTING 5 111 bk Page 87 Monday July 10 2006 2 26 PM...
Page 140: ...MAINTENANCE Page 127 MAINTENANCE 5 111 bk Page 127 Monday July 10 2006 2 26 PM...
Page 153: ...Page 140 NOTES 5 111 bk Page 140 Monday July 10 2006 2 26 PM...
Page 383: ...Page 370 NOTES 5 111 bk Page 370 Monday July 10 2006 2 26 PM...
Page 479: ...Page 466 NOTES 5 111 bk Page 466 Monday July 10 2006 2 26 PM...
Page 480: ...SPECIFICATIONS Page 467 SPECIFICATIONS 5 111 bk Page 467 Monday July 10 2006 2 26 PM...
Page 505: ...Page 492 NOTES 5 111 bk Page 492 Monday July 10 2006 2 26 PM...
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Page 520: ...APPENDIX Page 507 APPENDIX 5 111 bk Page 507 Monday July 10 2006 2 26 PM...
Page 528: ...INDEX Page 515 INDEX Index fm Page 515 Monday July 10 2006 2 48 PM...
Page 535: ...Page 522 NOTES Index fm Page 522 Monday July 10 2006 2 48 PM...