fuel pump PORSCHE CAYMAN S 2011 1.G Information Manual

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3.4 - litre flat-six engine of the Cayman S
1. High-pressure pump
2. High-pressure injector
3. Ignition rod module
4. Camshaft controller
5. Switch tappet with integrated
valve clearance compensation
6. Intake camshaft
7. Intake valves
8. Valve spring
9. Combustion chamber with
Alusil cylinder liner surface
10. Forged aluminium piston
11. Forged connecting rod
12. Crankshaft
13. Water pump
14. Vibration damper
15. Resonance valve
16. Distribution pipe flap
17. Intake manifold with integrated
sound chamber
18. Vacuum pump
19. Coolant jacket
20. Crankcase breather
21. Timing chain
Cayman | Drive
Cayman S: fuel consumption in l/100 km (mpg) urban 14.1 (20.0) –13.6 (20.8) ·
extra urban 7.1 (39.8) – 6.6 (42.8) · combined 9.5 (29.7) –9.4 (30.1); CO
2 emissions 223–221 g / km

3839
Cayman
Integrated dry-sump lubrication.
The purpose of integrated dry-sump
lubrication is to guarantee a
reliable oil supply while reducing
engine temperatures, even in
sportily driven cars. The oil reser -
voir is located inside the engine.
Four oil pumps remove the oil For the engine, these detailed
solutions mean a consistent
supply of oil regardless of gravita
-
tional loads, even in the most
demanding track conditions.
Lightweight construction.
Both Cayman models are
equipped with alloy engines. The
ingenious design, down to the
finest detail, keeps the weight of
the engines low and therefore
reduces fuel consumption. One of
the ways in which this light weight from the cylinder heads directly
into the oil sump. A fif th pump in
the oil sump directly supplies the
lubricating points in the engine.
To reduce power loss and increase
efficiency, an electronically

controlled oil pump supplies the
lubricating points inside the
construction was achieved was
by fully integrating the camshaf t
bearings into the cylinder heads.
engine as and when required.

This means that the oil pump
does not work so hard when there
is less demand for lubrication.
The benefits of this oil supply

system include optimum efficiency
combined with a reduction in
both fuel consumption and
CO
2 em issio ns.
Cayman | Drive

4041
Input dataRegulation/control of
Electronic engine management
ME 7.8/Cayman – SDI 3.1/ Cayman S
Engine load
Lambda sensor signals
Engine speed (from crankshaft)
Inlet camshaft phase angle
Knock sensor signals
Vehicle speed
Air-conditioning settings
Accelerator pedal
Temperatures
– Coolant
– Intake air
– Air in engine compartment
– Engine oil
– Ambient air
Pressures
– Engine oil
– Fuel
– Ambient air
Ignition
Manifold injection (Cayman)/
direct fuel injection (Cayman S)
Heating of Lambda sensors
Fuel pump (Cayman)/
fuel pumps controlled on demand
(Cayman S)
Fuel-tank venting
CAN interface with driving dynamics control, transmission control, immobiliser, instrument cluster, climate control,
SPORT button, SPORT PLUS button, sports exhaust system button, diagnostics, etc.
Valve lift switchover
(VarioCam Plus)
Secondary-air injection (Cayman)
Starter
Throttle-valve angle
Idling via throttle valve
and ignition
Fuel pressure (Cayman S)
Throttle valve
Camshaft position
Engine fan
Continuously variable oil pump
Cayman
same conditions, they are
monitored individually by the
knock control. The ignition point
is shifted individually, as and
when necessary, to protect the
cylinders and pistons at high
engine speeds. The on -board
diagnostics, which are compliant
with European standards, ensure
timely detection of any faults
and defects that may occur in the
exhaust and fuel systems and
notif y the driver immediately. This
also prevents increased pollutant
emissions and unnecessary fuel
consumption.Engine cooling system.
Our cross-flow cooling system,
as used in motorsport, minimises
the engine’s tendency to knock
and ensures comparatively low
emissions, fuel consumption and
noise levels.
Engine management system
with E-Gas.
The electronic engine management
system ensures optimum engine
performance at all times. It regu-
lates all engine-related functions
and assemblies (see diagram).
The results: optimum performance
and torque with comparatively low
fuel consumption and emissions.
Another important function of the
system is cylinder-specific knock
control. Since the six cylinders
never all work under exactly the
Cayman | Drive