2009 LAMBORGHINI MURCIÉLAGO fuel
[x] Cancel search: fuelPage 364 of 1173
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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 $
) X H O $ Q W L ( Y D S R U D W L R Q 6 \ V W H P
The anti-evaporation system prevents the fuel vapors, which consist of the lightest fractions of the hydrocarbons that form in the tank, from discharging into the atmosphere and being suctioned again to be burned.
The system operates especially when the outside temperature is high and the fuel temperature rises, thus increasing the tendency to evaporate. 2 S H U D W L Q J 3 U L Q F L S O H
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absorb them when the engine is off. 7 K H À R D W L Q J Y D O Y H K D V W K H I R O O R Z L Q J I X Q F W L R Q V •It prevents the fuel from reaching the canister in the case of hard acceleration/deceleration when the car has a
full tank, or from spilling from the tank, in case the car rolls over;
• It allows the vapors to pass from the tank to the canister;
• It enables to discharge into the atmosphere any excess pressure inside the tank (electrovalve malfunctioning,
clogged pipe).
A. From the tank
B. To the canister
C. Discharge into the atmosphere
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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 $
The canister is connected, by means of two solenoid valves, to two pipes that convey the vapors to the engine intake
manifolds. With the engine running, each solenoid valve is piloted in duty-cycle by the engine control unit according
to engine speed and load, thus putting the canister into communication with the intake manifold and allowing the
suction of the vapors inside the canister. At high engine speed, a venting valve (VISTON valve), connecting the
F D Q L V W H U W R W K H D W P R V S K H U H E \ P H D Q V R I D Q D G H T X D W H D L U ¿ O W H U S U H Y H Q W V W K H F D Q L V W H U L P S O R V L R Q W K D W F D Q E H F D X V H G by the engine vacuum.
The fuel vapor sensor generates a OBDII error in case of not controlled fuel vapor emission (not pressurized tank with leakage from the pipes or plug missing).
Fuel anti-evaporation system layout (Fig.2)
A. Fuel vapors pressure sensor
B. Floating valve
C. Fuel tank
D. Right suction fuel vapor inlet E. Left suction fuel vapor inlet
F. Venting valve (VISTON)
* $ L U ¿ O W H U I R U F D Q L V W H U Y H Q W L O D W L R Q H. Canister
I. Solenoid valves
Page 366 of 1173
![LAMBORGHINI MURCIÉLAGO 2009 Service Repair Manual 1
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® Automobili Lamborghini S.p.A.
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L824 02 03 03
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® Automobili Lamborghini S.p.A.
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® Automobili Lamborghini S.p.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 $
7 K H S U H V H Q W V H F W L R Q F R Q W D L Q V W K H I R O O R Z L Q J G L V D V V H P E O \ V H T X H Q F H V $ ) X H O D Q W L H Y D S R U D W L R Q Y D O Y HB) Canister $ ) X H O D Q W L H Y D S R U D W L R Q Y D O Y H 3 U H O L P L Q D U \ R S H U D W L R Q V •
Remove the right hood support piston (012703).
• Disassemble the silencer safety grid (025103).
• Disassemble the right side carbon bulkhead (081303).
• ' L V D V V H P E O H W K H D L U ¿ O W H U J X D U G (013303).
9 D O Y H G L V D V V H P E O H
1. Disassemble the fuel anti-evaporation valve ( A-Fig.1) by freeing the six screws that secure it to the tank.
B) Canister 3 U H O L P L Q D U \ R S H U D W L R Q V • Remove the left hood support piston (012703).
• Disassemble the silencer safety grid (025103).
• Disassemble the left side carbon bulkhead (081303).
• ' L V D V V H P E O H W K H D L U ¿ O W H U J X D U G (013303).
• ' L V D V V H P E O H W K H D L U ¿ O W H U (013303).
Canister disassemble
1. Disconnect the three pipes ( B-Fig.2) connected to the canister.
2. Remove the canister ( C-Fig.2).
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® Automobili Lamborghini S.p.A.
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L824 02 03 05
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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
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7 K H S U H V H Q W V H F W L R Q F R Q W D L Q V W K H I R O O R Z L Q J D V V H P E O \ V H T X H Q F H V $ ) X H O D Q W L H Y D S R U D W L R Q Y D O Y HB) Canister $ ) X H O D Q W L H Y D S R U D W L R Q Y D O Y H
1.
Assemble the fuel anti-evaporation valve ( A-Fig.1) on the tank using the six socket head screws.
• $ V V H P E O H W K H D L U ¿ O W H U J X D U G (013305).
• Assemble the right side carbon bulkhead (081305).
• Assemble the silencer safety grid (025105).
• Position the right hood support piston (012705).
B) Canister
1. Place the canister ( B-Fig.2) in its special housing inside the left side of the vehicle.
2. Reconnect the three pipes ( C-Fig.2) of the canister.
• $ V V H P E O H W K H D L U ¿ O W H U (013305).
• $ V V H P E O H W K H D L U ¿ O W H U J X D U G (013305).
• Assemble the left side carbon bulkhead (081305).
• Assemble the silencer safety grid (025105).
• Position the left hood support piston (012705).
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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 $
The causes of destruction of the catalyst inner part are mainly two: •Lead in the fuel, that lowers the conversion level to practically nothing (“lead poisoning”) and irreparably
damages the lambda sensor too;
• & R P S O H W H O \ X Q E X U Q W I X H O L Q W K H H [ K D X V W J D V G X H W R P L V ¿ U L Q J 7 K L V F D X V H V D Q L Q F U H D V H L Q W H P S H U D W X U H V X F K D V
to cause the melting of the metal support. As a consequence the connector must never, in any circumstances, be disconnected from the coils when the engine is running.
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The exhaust pipe coming out from the catalytic converter features a thermocouple to read the temperature. This
thermocouple generates a signal in proportion to the exhaust gas temperature and sends it to a special electronic
control unit that switches on the “CATALYST RIGHT” or “CATALYST LEFT” warning light to which it is connected.
If there is an abnormal temperature increase in one of the catalytic converters the control unit intervenes as follows:•For temperatures ranging between 945 and 960 °C the “CATALYST” warning light switches on intermittently:
, Q W K L V F D V H L W L V Q H F H V V D U \ W R V O R Z G R Z Q W K H F D U X Q W L O W K H Z D U Q L Q J O L J K W V Z L W F K H V R I I W K H Q ¿ Q G W K H F D X V H R I W K H exhaust system overheating.
• For temperatures over 960 °C the “CATALYST” warning light stays on permanently and the fuel is cut off to
W K H L Q M H F W R U V R I W K H U H O H Y D Q W F \ O L Q G H U E D Q N , Q W K L V F D V H L W L V Q H F H V V D U \ W R V W R S W K H F D U D Q G ¿ Q G W K H F D X V H R I W K H exhaust system overheating.
When temperature drops below 800°C, normal functions are reset.
7 K H ³ & $ 7 $ / < 6 7 ´ Z D U Q L Q J O L J K W V D U H W H V W H G D Q G V Z L W F K H G R Q I R U D E R X W W Z R V H F R Q G V Z K H Q H Y H U W K H L J Q L W L R Q N H \ L V W X U Q H G W R ³ 0 $ 5 & , $ ´
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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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2 [ \ J H Q 6 H Q V R U
It is a sensor generating an electric signal according to the ratio between the oxygen inside the exhaust gas and the
oxygen inside the outside air. By means of this sensor it is possible to measure the deviation from the stoichometric ratio (lambda ratio) of the air – fuel mixture sent to the cylinders.
Each cylinder bank has two oxygen sensors: one is installed on the exhaust gas inlet coupling in the catalytic converter of the exhaust system, the other on the converter outlet.
A. Pre-catalyst oxygen sensor (LINEAR)
B. Post-catalyst oxygen sensor (ON-OFF)
C. Catalyst
2 1 2 ) ) R [ \ J H Q V H Q V R U R S H U D W L R Q G L D J U D P S R V W F D W D O \ W L F F R Q Y H U W H U • The main element is a ceramic body coated on both sides (Nernst cell).
• The coatings act as electrodes.
• One layer of electrodes is in contact with external air, the other with the exhaust gases.
• The difference between the oxygen contained in the outside air and that in the exhaust gases generates the
sensor’s voltage.
Use LDAS-32 to check the POST-catalytic converter oxygen sensors. External air Exhaust gases
Electrodes
Engine control unit
Sensor voltage
Page 980 of 1173
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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
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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 $
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The LIE system is a system that integrates a digital electronic ignition spark advance and static timing system with an electronic indirect fuel injection system of the multiple timed sequential type.
According to the engine structure, which has the cylinders divided into two cylinder banks, two complete systems that
are suitably synchronized with each other have been applied, and each controls a cylinder bank of six cylinders. As
a consequence there are two engine control units, connected to each other by the CAN line, managing the injection
and ignition of each cylinder bank and four throttle bodies connected to each other by CAN lines and electronically
controlled by LIE control units through the ETB control units. These control units are also connected by the CAN line
to the GFA control unit that co-ordinates and manages many functions especially concerning diagnostic. The system can be divided into the following sub-systems: ELECTRICAL/ELECTRONIC SYSTEM
FUEL SUPPLY SYSTEM
INTAKE SYSTEM
THROTTLE BODIES GENERAL DESCRIPTION
EXHAUST SYSTEM
ANTI-EVAPORATION DEVICES The system can properly acquire the following parameters: •Engine speed;
• Correct TDC sequence of the cylinders (injection timing);
• Absolute pressure in the intake manifold;
• Throttle position and position variation;
• Accelerator pedal position;
• Intake air temperature;
• Engine coolant temperature;
• Exhaust gas internal temperature;
• Mixture strength;
• Battery voltage;
• Possible start-up of air conditioner;
• Pressure in the exhaust manifold;
• Pressure in the fuel anti-evaporative circuit.