compression ratio INFINITI QX50 2019 Owner's Manual

2 Instruments and controls
Instrument panel.................................2-2
Meters and gauges ...............................2-4
Speedometer and odometer ...................2-4
Tachometer ...................................2-6
Engine coolant temperature gauge .............2-6
Fuel gauge ....................................2-7
Variable Compression Turbo ...................2-7
Warning lights, indicator lights and audible
reminders ........................................2-9
Checking lights .............................. 2-10
Warning lights .............................. 2-10
Indicator lights ............................... 2-15
Audible reminders ........................... 2-18
Vehicle information display .....................2-19
How to use the vehicle information
display ...................................... 2-20
Startup display .............................. 2-20
Resetting the trip computer ..................2-20
Oil control system ........................... 2-20
Vehicle information display warnings and
indicators ................................... 2-24Security systems
............................... 2-32
Vehicle security system ......................2-32
INFINITI Vehicle Immobilizer System .........2-33
Wiper and washer switch .......................2-35
Switch operation ............................ 2-35
Rain-sensing auto wiper system
(if so equipped) .............................. 2-36
Rear switch operation ....................... 2-37
Rear window defroster, outside mirror
defroster, and wiper deicer (if so equipped)
switch ......................................... 2-39
Headlight switch ............................... 2-39
Headlight control switch .....................2-39
LED Daytime Running Lights (DRL)
system ...................................... 2-44
Instrument brightness control ................2-45
Turn signal switch ........................... 2-45
Fog light switch (if so equipped) .............2-46
Horn ........................................... 2-46
Climate controlled seat switches
(if so equipped) ................................. 2-47

FUEL GAUGE
The gauge indicates theapproximatefuel
level in the tank.
The gauge may move slightly during braking,
turning, acceleration, or going up or down
hills.
The gauge needle returns to 0 (Empty) after
the ignition switch is placed in the OFF posi-
tion.
The low fuel warning light comes on when
the amount of fuel in the tank is getting low. Refill the fuel tank before the gauge regis-
ters 0 (Empty).
The
indicates that the fuel-filler door
is located on the driver’s side of the vehicle.
CAUTION
∙ If the vehicle runs out of fuel, theMalfunction Indicator Light (MIL) may
come on. Refuel as soon as possible. After
a few driving trips. the
light should
turn off. If the light remains on after a
few driving trips, have the vehicle in-
spected. It is recommended that you visit
an INFINITI retailer for this service.
∙ For additional information, refer to “Malfunction Indicator Light (MIL)” in
this section.
VARIABLE COMPRESSION
TURBO
Your engine is equipped with a variable com-
pression ratio system called “Variable Com-
pression Turbo”. This system can vary the
engine compression ratio continuously.
According to driving conditions, the system
applies optimum compression ratio auto-
matically to achieve both high output and
high fuel economy efficiency.
LIC3851LIC3924
Instruments and controls2-7

1Compression ratio status display
Displays the status of compression ratio
controlled by Variable Compression
Turbo. The lowest compression ratio
(8:1) and the highest (14:1) are displayed
as “Power” and ”Eco” respectively.
2Turbo charger boost pressure gauge
Displays the turbo charger boost pres-
sure.
NOTE:
Under some conditions, the compression ra-
tio may not change. This is not a malfunction
of the system.
CAUTION
If the Variable Compression Turbo becomes
faulty, the Malfunction Indicator Light
(MIL) may come on. For additional infor-
mation, refer to “Malfunction Indicator
Light (MIL)” in the “Instruments and con-
trols” section of this manual.
2-8Instruments and controls

ENGINE
ModelKR20DDET
Type Gasoline, 4-cycle, DOHC
Cylinder arrangement 4-cylinder, inline
Bore x Stroke when compression ratio = 8 in (mm) 3.307 x 3.547 (84.0 x 90.1)
when compression ratio = 14 in (mm) 3.307 x 3.500 (84.0 x 88.9)
Displacement when compression ratio = 8 cu in (cm
3) 121.86 (1,997)
when compression ratio = 14 cu in (cm3) 120.22 (1,970)
Firing order 1–3–4–2
Idle speed No adjustment is necessary.
CVT in N (Neutral) position
Ignition timing (degree B.T.D.C. at idle speed)
CO%atidle
Spark plug DILKAR7N9HG
Spark plug gap (Nominal) in (mm) 0.035 (0.9)
Camshaft operation Timing chain
This spark ignition system complies with the Canadian standard ICES-002.
SPECIFICATIONS
10-8Technical and consumer information