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16
Engine protection mechanisms
The LFA’s 1LR-GUE engine generates a maximum output of 412 kW (553 HP) at
8,700 rpm and delivers 90% or more of its peak torque of 354 ft•lbf (480 N•m,
48.9 kgf•m) between 3,700 and 9,000 rpm. The engine features a number of
protection mechanisms to ensure longevity and maintain peak performance.
A number of driving restrictions will be in place until the total mileage shown on the
odometer exceeds 310 miles (500 km). This break-in period serves not only to
protect the engine, but also to preserve the transmission, suspension and the vehicle
as a whole. It is recommended that during this time the owner become familiar with
the LFA and avoid high-load driving maneuvers.
One engine protection mechanism in place beyond the break-in period is the limiting
of maximum engine speed when the engine is cold. When the vehicle is cold started,
various components within the engine begin to warm up and expand at different rates.
Forcing the engine to operate at high speeds in this condition can cause accelerated
engine wear. For this reason, the maximum engine speed is limited when manually
shifted driving modes (SPORT, NORMAL, WET) are selected and restricted to a set
range when AUTO mode is selected.
This engine speed limitation does not indicate a malfunction with the vehicle. Warming
the engine up by driving, rather than extended idling, is recommended.
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17
Engine protection mechanisms
■
■Limited maximum engine speed during break-in
period
The maximum engine speed is limited to 7,400 rpm if the total mileage shown on the
odometer is less than 310 miles (500 km).
■
■Engine starting restrictions in extremely low
temperatures
In extremely low temperatures, such as when the coolant or oil temperature gauge
shows a reading of -13°F (-25°C) or below, the engine will not be allowed to start.
This mechanism is designed to protect the engine.
■
■Restricted maximum engine speed in extremely
low temperatures
When the engine is started with the coolant temperature gauge showing a reading
of 5°F (-15°C) or below, the maximum engine speed will be limited to 4,400 rpm for
approximately eight minutes.
■
■Variable maximum engine speed during warm-
up
When the engine is started with the coolant temperature gauge showing a reading
of 176°F (80°C) or below, the maximum engine speed will vary according to the
coolant temperature.
■
■Limited maximum engine speed in neutral gear
The maximum engine speed will be limited to 5,100 rpm when neutral gear is selected
and the accelerator pedal is continuously depressed.
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Technical information
Performance
Max. Speed325 km/h
Acceleration
(with two occupants) 0 to 100 km/h
3.7 sec.
Max. Allowed Speed 1st83 km/h
2nd 123 km/h
3rd 167 km/h
4th 218 km/h
5th 277 km/h
6th -
Turning Diameter
(outside front) Wall to Wall
6.1 m
Fuel Consumption At 60km/h
(Japanese models) 10.5 km/L
Advertised Mileage
(North American models) 11 mpg/16 mpg
(city/highway)
CO
2 Emissions (European models) 379 g/km
Acceleration diagram
Time [sec.]
Speed [km/h]
350
300 250
200
150
100 50 0 0 10 20 30 40 50 60
Transmission diagram
Speed [km/h]
Engine speed [rpm]
10,0009,000
8,000 7,000
6,000 5,000 4,000
3,000 2,000
1,000 0 50 100 150 200 250 300 350