F3.01 Technical
specifications
Injection - Ignition
Type
BOSCH MED 9.6.1
GDI DIRECT
INJECTION
ECU BOSCH
Motronic-
MED 9.6.1
Ignition order
1-8-3-6-4-5-2-7
Fuel supply pressure 5 bar
Single ignition coil
ELDOR
Spark plugs
NGK
High pressure injector BOSCH HDEV 5.1
High pressure pump
BOSCH HDP 5
Rail pressure sensor
DS-HD-KV4
Proportional oxygen
sensor
BOSCH LSU 4.9
Air flow meter
HFM 7 - RP
Knock sensor
BOSCH KS4
Timing sensor
BOSCH PG 3.8
Direct injection
Overview
Direct injection is a fuel system in which fuel is injected via one or more precisely oriented jets directly into the
combustion chamber. The injectors are located within the combustion chamber of each cylinder, so that
fuel is injected directly into the individual combustion chamber.
In conventional indirect injection systems, fuel is injected into the stream of aspirated air, before it enters the
cylinder. Single point injection systems have a single injector - even for a multi-cylinder engine - located
upstream of the point where the intake ducts branch out towards each cylinder.
Multi point
or
PFI (Port
Fuel Injection)
systems, on the other hand, have multiple injectors - one per cylinder - located in the
intake manifold, ahead of the intake valve. As a result, fuel is mixed differently - in PFI systems, mixing
occurs in the intake duct, where part of the fuel evaporates, forming a fine mixture with the air, and part of
the fuel does not evaporate, depositing instead on the inner wall of the duct creating a thin liquid layer (a
phenomenon known as wall wetting), whereas in the case of direct injection, as only air flows through the
ducts, mixing occurs directly within the combustion chamber.
Moreover, direct injection enables
a stratified charge
, resulting in a nonhomogeneous distribution of the fuel
in the combustion chamber; in particular, this creates a zone with a stoichiometric or slightly rich mixture
zone around the spark plug electrodes. This ensures combustion even with very lean mixtures: the
air/fuel ratios
- usually indicated with the symbol
α
- is in these cases extremely high, around
40:1
.
Stratification is controlled by a number of factors enabling the confinement of the stoichiometric zone,
directing the spray and impeding excessive diffusion throughout the chamber:
Stratification allows control over the engine charge by metering the quantity of fuel injected alone - as occurs
in diesel engines (quantity regulation) - eliminating the throttle valve and, as a consequence, reducing
Combustion chamber geometry
Conformation of the airflow field
Injector geometry
Injection type
Содержание California
Страница 19: ...Z Tyre type and pressure label ...
Страница 20: ...04 02 Assembly number Assembly number A Assembly number label ...
Страница 21: ...04 03 Chassis number Chassis number B Punched chassis number ...
Страница 22: ...04 04 Engine type and number Engine type and number C Punched engine type and number ...
Страница 23: ...04 05 Chassis number Chassis number D Chassis number ...
Страница 24: ...04 06 Gearbox type and number Gearbox type and number E Gearbox type and number plate ...
Страница 25: ...04 07 Vehicle identification Vehicle identification K VIN label Vehicle Identification Number ...
Страница 26: ...04 08 Tyres Tyres F Tyre pressure monitoring system identifier label Z Tyre type and pressure label ...
Страница 28: ...04 10 Fuel Fuel I Fuel label ...
Страница 29: ...04 11 Paintwork Paintwork L Paintwork label ...
Страница 30: ...04 12 Emissions control Emissions control M Emissions control data label ...
Страница 31: ...04 13 Airbag Airbag N Do not install child seat on passenger seat label ...
Страница 32: ...04 14 Airbag Airbag O Airbag maintenance label ...
Страница 33: ...04 15 Airbag Airbag P Airbag warning label ...
Страница 43: ...Fluids and lubricants table Model Fluids and lubricants table Download ...
Страница 71: ...Screw the cap A back on tightly ...
Страница 104: ...Connect the battery F2 01 ...
Страница 118: ...Vehicle Setup Parameter Check Form Model Vehicle Setup Parameter Check Form Download ...
Страница 224: ...Undo the screws indicated Retrieve the brackets E Undo the screws indicated Undo the screws indicated ...
Страница 259: ...Replace the gasket 11 Replace the gasket 10 Undo the screws indicated Remove the tensioner F complete with mount ...
Страница 286: ...Tighten the screws indicated Tightening torque Nm Class Screw 9 Nm B Connect the connector 9 Connect the connector 8 ...
Страница 518: ...Check the Shell Transaxle 75W 90 GL5 gear oil level A3 02 Check that there is no leakage from the drain plugs ...
Страница 520: ...A DCT gearbox clutch oil tank and clutch oil pump B Clutch oil pipes C Clutch oil radiator ...
Страница 623: ...CCM Brake Disc Wear Form Model All Models CCM Brake Disc Wear Form Download ...
Страница 1040: ...Undo the screws indicated Remove the inner handle A Undo the screws indicated Undo the screws indicated ...
Страница 1068: ...A External light switch B TFT display controls C Parking brake controls D Engine compartment lid release lever ...
Страница 1069: ...E Instrument panel F NIT G Hazard warning light button H Cup holder Instruments and controls on steering wheel ...
Страница 1070: ...A Horn button B Engine start button C Manettino ...
Страница 1102: ...Perform the respective cycle with the DEIS diagnostic tester ...
Страница 1144: ...Connect the battery F2 01 ...
Страница 1220: ...Precautions and guidelines for using the RHT retractable hard top ...
Страница 1328: ...Refit the Tonneau Cover E6 06 Refit the luggage compartment lid E3 02 Connect the battery F2 01 ...
Страница 1332: ...Detach the front mounts of the headliner trim Detach the rear mounts of the headliner trim Undo the headliner fastener screw ...
Страница 1334: ...Undo the indicated fasteners Retrieve the indicated shims Release the clip 1 ...
Страница 1335: ...Remove the indicated clip Undo the indicated screw Undo the screws indicated ...
Страница 1338: ...Tighten the screws indicated Tightening torque Nm Class Screw 4 Nm B Refit the indicated clip Attach the clip 1 ...
Страница 1379: ...Remove the pad B and replace Fit and fasten the new pad B pressing it by hand Fit the trim A correctly ...
Страница 1398: ...Above 35 C D8215 Spot Repair D8215 Extended D886 for detailed information see technical datasheet 171 Deltron D8105 ...
Страница 1452: ...Refit the rear wheelhouses E3 05 Connect the battery F2 01 ...
Страница 1453: ...F2 07 Lights Diagnosing condensation in headlamps ...
Страница 1454: ...Whenever condensation is found in a headlamp please perform the checks and tests indicated above before starting any work ...
Страница 1561: ...Ss Sensor signal λ Lambda ratio excess g Rich mixture M Lean mixture ...
Страница 1570: ...Refit the DCT gearbox C2 03 Connect the battery F2 01 ...
Страница 1612: ...F4 02 Airbag Airbag system layout A Driver side airbag module B ECU C Side airbag module D Passenger side airbag module ...
Страница 1656: ...G Heater evaporator H Pollen filter I Air vents M Expansion valve ...
Страница 1677: ...Refit the front wheelhouses E3 05 ...
Страница 1686: ...Refit the caps 1 Refit the engine compartment cosmetic shields E3 13 ...