Behind the transparent plastic sheet are protective cover and panel of instrument cluster. The light
screen is integrated into the protective cover, to keep the instrument face unaffected from ambient
illumination and reflection, so as to ease the dazzle. The instrument cluster panel and dial enjoy
multi-layer structures. In the panel close to the center, there are two big round opening, through
which, two master instruments (tachometer and speedometer) can be seen; on the centers of the
two master instruments, there are LCD displays, each display has two isometric square panes,
through which, two minor instruments (fuel gauge and engine coolant temperature gauge) can be
seen; there is a display under the two minor instruments, through which mileage can be read.
Vocal warning is also integrated into the instrument cluster. Dark coloring of the panel facilitates to
recognize that the face and instrument dial face consist of multiple layers with surface layer or
covering layer. The surface layer is semitransparent of dark color, which can prevent the
vagueness of cluster component encapsuled with unlighted indicators, while the semitransparent
feature makes indicators and icons visible when lighted. Graphs, graduations, and figures are also
semitransparent, lighted from the back; while the white instrument pointer is lighted from the inside.
Below the plastic sheet of instrument cluster along the central position is a little plastic button
switch for odometer and mileometer, which protrudes over the sheet surface through the special
hole penetrating the sheet. By utilizing integrated circuit and PCI data bus, partial information from
the network of instruments and indicators are controlled by the instrument cluster, and some
information is directly input from corresponding instrument and indicator for function.
Table 4-1
Insufficient fuel
warning
Engine coolant
overheated
Battery charging
warning
Oil pressure insufficient
indication
Brake system fault
warning
Parking brake
on-position indication
Engine OBD
indication
ABS fault warning
Seat belt reminder
indication
Air bag fault warning
Rear defroster
indication
Steering light
indication, L
Steering light
indication, R
Hazard warning light
indication
Headlight high beam
indication
Headlight low beam
indication
Position lamp
indication
Front fog light
indication
Rear fog light indication
Trouble indication
beyond engine OBD
……
120km/h speed
warning
Luggage boot ajar
indication
Door ajar indication
Reverse radar range
display indication
… …
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