2009 LAMBORGHINI GALLARDO fuel pump
[x] Cancel search: fuel pumpPage 338 of 1659
![LAMBORGHINI GALLARDO 2009 Workshop Manual 1
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Fig.1
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L714 01 28 00
Fig.1
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L714 01 28 00
Fig.1
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P R P H Q W R G H O O D S X E E O L F D ] L R Q H & R Q U L V H U Y D G L D J J L R U Q D P H Q W R H P R G L ¿ F K H 6 R Q R Y L H W D W H O D U L V W D P S D O D U L S U R G X ] L R Q H O ¶ L Q R O W U R D S H U V R Q H Q R Q D X W R U L ] ] D W H H R D W H U ] H S H U V R Q H O D W U D G X ] L R Q H D Q F K H S D U ] L D O H
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* H Q H U D O G H V F U L S W L R Q R I W K H G L U H F W L Q M H F W L R Q V \ V W H P ' , 6
The
G L U H F W L Q M H F W L R Q V \ V W H P ' , 6 is comparable to the running of an indirect injection engine. The basic difference
is that in this case, the fuel is injected directly into the cylinder.
This system better optimizes the amount of fuel to be injected, so consumption – and consequently emissions – are reduced. Characteristics of the system • A low pressure pump having an operation range between 6 and 4 bar,
• 7 Z R L Q W D N H P D Q L I R O G V H T X L S S H G Z L W K W Z R D L U À R Z P H W H U V W K D W P H D V X U H W K H À R Z D Q G W H P S H U D W X U H R I W K H D V S L U D W H G
air (one per manifold),
• Two high pressure pumps mechanically driven by the motion of the engine can reach a pressure varying
between E D U 0 , 1 D Q G E D U 0 $ ; .
• High pressure injectors that directly inject the fuel into the cylinder crown.
• A special piston that allows a vortex to be created, inside of which the fuel vaporized at high pressure is
sprayed.
The system is designed for the following types of operation: • V W R L F K L R P H W U L F V W U D W L ¿ H G P L [ W X U H
• homogeneous mixture,
• homogeneous and rich mixture.
, Q R X U V S H F L ¿ F F D V H homogeneous operation is used:
I U R P W R U S P L Q V W R L F K L R P H W U L F V W U D W L ¿ H G P L [ W X U H H V S H F L D O O \ D W O R Z V S H H G V D Q G G X U L Q J W K H L J Q L W L R Q S K D V H V W R
help with emissions.Homogenous and rich running is used only when there is a demand for torque.
When running at low speeds, the injection system is further aided by a tumble system inside the intake manifold that
helps the vortex created by the design of the piston, ensuring that the quantity of injected fuel goes directly beneath the spark plug. In this way the mixture is optimized with a lower quantity of fuel.
The injection of fuel during the compression phase of the cylinder is managed electronically by two injection control
units, of which one works as the MASTER and the other as the SLAVE .
The injection system is controlled by two linear oxygen sensors that alter the amount of fuel according to the demand
of torque and engine rpm. There are also two latest generation three-way pre-catalytic converters ( A-Fig.1) (with two
oxygen sensors for their control) and two post-catalytic converters incorporated inside the silencer ( B-Fig.1).
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![LAMBORGHINI GALLARDO 2009 Workshop Manual 5
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Fig.6
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Fig.7
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L714 01 28 00
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L714 01 28 00
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G L $ X W R P R E L O L / D P E R U J K L Q L 6 S $ L Q E D V H D O O D O H J J H V X L G L U L W W L G ¶ D X W R U H 7 X W W L L F D S L W R O L 3 ' ) G L F X L V L F R P S R Q J R Q R L P D Q X D O L R I ¿ F L Q D : ( % G H V F U L W W L G L V H J X L W R V L E D V D Q R V X O O H L Q I R U P D ] L R Q L G L V S R Q L E L O L D O
P R P H Q W R G H O O D S X E E O L F D ] L R Q H & R Q U L V H U Y D G L D J J L R U Q D P H Q W R H P R G L ¿ F K H 6 R Q R Y L H W D W H O D U L V W D P S D O D U L S U R G X ] L R Q H O ¶ L Q R O W U R D S H U V R Q H Q R Q D X W R U L ] ] D W H H R D W H U ] H S H U V R Q H O D W U D G X ] L R Q H D Q F K H S D U ] L D O H
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Fuel pump
There is only one electric fuel pump (
A-Fig.6) and it is in the right tank. This pump is controlled by an ECU ( B-Fig.6)
which in turn is controlled by the master control unit.
The pump has an operating pressure ranging between 4 and 6 bar, depending on the various operating conditions
of the vehicle.
The pump sends the fuel to the two high pressure pumps (which are mechanical) that compress the fuel and take the pressure to a value varying from 120 to 140 bar, according to vehicle operation.
Both the high and low pressure pumps are monitored by two sensors installed on the respective lines to prevent overpressure problems. Linear phase transformers
Linear phase transformers allow the engine phase to vary according to the torque required in order to always have optimum phasing.
In this version they are always enabled, and the phasing follows different maps according to the load and the atmospheric conditions. Piloting is performed by a solenoid valve ( A-Fig.7), which makes the oil pass inside the phase-changing gear.
This operation is managed by the injection control units that also receive the position of the camshaft through the
Hall effect sensors ( B-Fig.7) mounted on the camshafts:
• two sensors for the exhaust (one per cylinder bank)
• two sensors for the intake (one per cylinder bank)
Page 344 of 1659
![LAMBORGHINI GALLARDO 2009 Workshop Manual 7
L714 01 28 00
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L714 01 28 00
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L714 01 28 00
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G L $ X W R P R E L O L / D P E R U J K L Q L 6 S $ L Q E D V H D O O D O H J J H V X L G L U L W W L G ¶ D X W R U H 7 X W W L L F D S L W R O L 3 ' ) G L F X L V L F R P S R Q J R Q R L P D Q X D O L R I ¿ F L Q D : ( % G H V F U L W W L G L V H J X L W R V L E D V D Q R V X O O H L Q I R U P D ] L R Q L G L V S R Q L E L O L D O
P R P H Q W R G H O O D S X E E O L F D ] L R Q H & R Q U L V H U Y D G L D J J L R U Q D P H Q W R H P R G L ¿ F K H 6 R Q R Y L H W D W H O D U L V W D P S D O D U L S U R G X ] L R Q H O ¶ L Q R O W U R D S H U V R Q H Q R Q D X W R U L ] ] D W H H R D W H U ] H S H U V R Q H O D W U D G X ] L R Q H D Q F K H S D U ] L D O H
V H Q ] D O ¶ D X W R U L ] ] D ] L R Q H V F U L W W D G D S D U W H G L $ X W R P R E L O L / D P E R U J K L Q L 6 S $
Sensor
A
Speed sensor
B * H D U V S R V L W L R Q V H Q V R U V
C Secondary air pressure sensors
' Low fuel pressure sensor output
( Wiv pressure sensor output
F Oil pressure sensor output
G CAM sensors output
H Exhaust phase sensors output
, Intake phase sensors output
L Coolant temperature sensor output
M Air temperature sensor
1 A/C sensor
O Clutch pump sensor
3 $ , 5 % $ * V H Q V R U V
Q Coolant level sensor
5 Oil level and temperature sensor
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/ D P E R U J K L Q L 6 S $ E D V H G R Q F R S \ U L J K W O D Z $ O O R I W K H 3 ' ) F K D S W H U V L Q W K H : ( % Z R U N V K R S P D Q X D O V G H V F U L E H G E H O R Z D U H E D V H G R Q L Q I R U P D W L R Q D Y D L O D E O H D W W K H W L P H R I S X E O L F D W L R Q 7 K H F R P S D Q \ U H V H U Y H V
W K H U L J K W W R P D N H X S G D W H V D Q G P R G L ¿ F D W L R Q V 7 K H I R O O R Z L Q J D U H S U R K L E L W H G U H S U L Q W L Q J U H S U R G X F W L R Q I R U Z D U G L Q J W R X Q D X W K R U L ] H G S H R S O H D Q G R U W K L U G S D U W L H V D Q G W U D Q V O D W L R Q L Q F O X G L Q J S D U W L D O Z L W K R X W
Z U L W W H Q D X W K R U L ] D W L R Q I U R P $ X W R P R E L O L / D P E R U J K L Q L 6 S $
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A) Injectors
% ) X H O S X P S C) ' L V D V V H P E O \ fuel pump
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/ D P E R U J K L Q L 6 S $ E D V H G R Q F R S \ U L J K W O D Z $ O O R I W K H 3 ' ) F K D S W H U V L Q W K H : ( % Z R U N V K R S P D Q X D O V G H V F U L E H G E H O R Z D U H E D V H G R Q L Q I R U P D W L R Q D Y D L O D E O H D W W K H W L P H R I S X E O L F D W L R Q 7 K H F R P S D Q \ U H V H U Y H V
W K H U L J K W W R P D N H X S G D W H V D Q G P R G L ¿ F D W L R Q V 7 K H I R O O R Z L Q J D U H S U R K L E L W H G U H S U L Q W L Q J U H S U R G X F W L R Q I R U Z D U G L Q J W R X Q D X W K R U L ] H G S H R S O H D Q G R U W K L U G S D U W L H V D Q G W U D Q V O D W L R Q L Q F O X G L Q J S D U W L D O Z L W K R X W
Z U L W W H Q D X W K R U L ] D W L R Q I U R P $ X W R P R E L O L / D P E R U J K L Q L 6 S $
& ' L V D V V H P E O \ K L J K S U H V V X U H I X H O S X P S 3 U H O L P L Q D U \ R S H U D W L R Q V •
Remove the Engine Bay (081303).
• Remove the air intake manifold (012903).
• Remove high pressure fuel pump 3 8 1 7 2 % .
' L V D V V H P E O \ K L J K S U H V V X U H I X H O S X P S 1. Softly screw the two nipples ( $ ) L J ) on the pump
8 V H D Q H Z Q L S S O H V D I W H U H Y H U \ U H P R Y D O
2. Softly screw the purge screw ( % ) L J ) on the pump.
8 V H D Q H Z S X U J H V F U H Z D I W H U H Y H U \ U H P R Y D O
3. Disassemble the pump ( ) L J )
1.High pressure pump
2. Nipple
3. Nipple
4. Purge Screw
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® Automobili Lamborghini S.p.A. 7 K H L Q I R U P D W L R Q D Q G S U R F H G X U H V S X E O L V K H G E H O R Z D U H V W U L F W O \ F R Q ¿ G H Q W L D O D Q G H [ F O X V L Y H O \ I R U W K H / D P E R U J K L Q L ' H D O H U 1 H W Z R U N D Q G $ X W K R U L ] H G 6 H U Y L F H 3 R L Q W V $ O O F R S \ U L J K W V D U H S U R S H U W \ R I $ X W R P R E L O L
/ D P E R U J K L Q L 6 S $ E D V H G R Q F R S \ U L J K W O D Z $ O O R I W K H 3 ' ) F K D S W H U V L Q W K H : ( % Z R U N V K R S P D Q X D O V G H V F U L E H G E H O R Z D U H E D V H G R Q L Q I R U P D W L R Q D Y D L O D E O H D W W K H W L P H R I S X E O L F D W L R Q 7 K H F R P S D Q \ U H V H U Y H V
W K H U L J K W W R P D N H X S G D W H V D Q G P R G L ¿ F D W L R Q V 7 K H I R O O R Z L Q J D U H S U R K L E L W H G U H S U L Q W L Q J U H S U R G X F W L R Q I R U Z D U G L Q J W R X Q D X W K R U L ] H G S H R S O H D Q G R U W K L U G S D U W L H V D Q G W U D Q V O D W L R Q L Q F O X G L Q J S D U W L D O Z L W K R X W
Z U L W W H Q D X W K R U L ] D W L R Q I U R P $ X W R P R E L O L / D P E R U J K L Q L 6 S $
7 K L V V H F W L R Q H [ S O D L Q V K R Z W R D V V H P E O H
A) Injectors % Reassembly fuel pump
& ) X H O S X P S
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A
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/ D P E R U J K L Q L 6 S $ E D V H G R Q F R S \ U L J K W O D Z $ O O R I W K H 3 ' ) F K D S W H U V L Q W K H : ( % Z R U N V K R S P D Q X D O V G H V F U L E H G E H O R Z D U H E D V H G R Q L Q I R U P D W L R Q D Y D L O D E O H D W W K H W L P H R I S X E O L F D W L R Q 7 K H F R P S D Q \ U H V H U Y H V
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Z U L W W H Q D X W K R U L ] D W L R Q I U R P $ X W R P R E L O L / D P E R U J K L Q L 6 S $
% 5 H D V V H P E O \ K L J K S U H V V X U H I X H O S X P S 1. Reassemble the various parts of the high pressure pump ( ) L J ).
1. High pressure pump
2. Nipple
3. Nipple
4. Purge Screw
2. Manually screw the purge screw ( $ ) L J ) on the pump.
Use a new purge screw.
3. Mannualy screw the two nipples ( $ ) L J ) on the pump.
Use new nipples.
• Assemble the high pressure fuel pump (Step C).
• Assemble the air intake manifold (012905).
• Assemble the Engine Bay (081305).
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L714 01 28 05
) L J
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) L J
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/ D P E R U J K L Q L 6 S $ E D V H G R Q F R S \ U L J K W O D Z $ O O R I W K H 3 ' ) F K D S W H U V L Q W K H : ( % Z R U N V K R S P D Q X D O V G H V F U L E H G E H O R Z D U H E D V H G R Q L Q I R U P D W L R Q D Y D L O D E O H D W W K H W L P H R I S X E O L F D W L R Q 7 K H F R P S D Q \ U H V H U Y H V
W K H U L J K W W R P D N H X S G D W H V D Q G P R G L ¿ F D W L R Q V 7 K H I R O O R Z L Q J D U H S U R K L E L W H G U H S U L Q W L Q J U H S U R G X F W L R Q I R U Z D U G L Q J W R X Q D X W K R U L ] H G S H R S O H D Q G R U W K L U G S D U W L H V D Q G W U D Q V O D W L R Q L Q F O X G L Q J S D U W L D O Z L W K R X W
Z U L W W H Q D X W K R U L ] D W L R Q I U R P $ X W R P R E L O L / D P E R U J K L Q L 6 S $
C) Assembling high pressure fuel pump
It is necessary to use new spare parts for the assembly procedure. Using worn parts can damage W K H F D U V H Y H U H O \
1. Spread a thin layer of oil on the grommet ( $ ) L J )
2. Assemble the pump and screw the mounting screws ( % ) L J E \ W X U Q L Q J W Z L F H ¿ U V W R Q H V F U H Z D Q G W K H Q W K H
other so as to tighten them symmetrically. Continue until the two screws are completely tightened.
6 F U H Z L Q J W K H V F U H Z V W L J K W H Q L Q J W R U T X H E
Screwing the screws asymettrically can cause damage to the seat or the stem of the pump.