Shanghai Volkswagen way view of a recent production of SUV, the car uses EA888 series engine, equipped with a 09M type 6-speed electronically controlled automatic transmission, the vehicle body electrical system highlights more prominent, using advanced lighting, panorama sunroof and parking assist systems. In order to facilitate the readers understanding of the car, this part of the introduced technology highlights the vehicle electrical system of the vehicle.
First, the electric vehicle with an outer rearview mirror folding function
FIG 1
equipped with fold-way view of the electric vehicle function outside mirror (FIG. 1), when the knob is rotated to the folded position, the rearview mirror folded inwardly. Forwarding function of the vehicle equipped with the right outer mirror, the driver when the gear change into R, right outside mirror can be automatically moved to a predetermined position. This feature provides better rearward vision when reversing. In order to set the position of the outer mirror reversing, should be comfortable in the function menu display in the instrument cluster transfer function in turn mirror. And switch to the R range selecting position R, adjusting the position of the right side outer mirror in order to see the rearward field of vision. Upon completion, the setting will be stored automatically.
Second, the panorama sunroof
FIG. 2
Tiguan equipped double motor independent control panorama sunroof (FIG. 2), to close the ignition switch after unless open the driver’s door or front passenger side door, still be able to open or close the sliding roof panorama within about 10 min.
1. pinch function
and panoramic sunroof roller blind having a pinch function, but the function can not prevent the skylight opening pinch finger grip body part. If the panoramic sunroof or roller blind closed blocked, it stops immediately shut down and reopen. When the emergency shutdown function is activated, anti-trap function failure.
2. overheat protection function
The sliding roof motor overheat protection means activated according to different parameters. When the motor overheat protection function is working, it required to secure a new function after a cooling phase.
3. The panoramic roof setting
Replace the cover glass, Motor, or after sun visor tilt mechanism, corresponding to the respective drive means need to be set.
(1) setting a panoramic roof glass cover of the motor
① turn the ignition switch;
② rotary switch must ldquo; sunroof closed rdquo; position; [123 ]
③ rotary switch is pulled downward in the arrow 1, and the whole (about 20 s) in the process, held in this position;
④ when set, about 200 moves toward the cover glass mm;
⑤ after the cover glass is again closed to complete the setting, the rotary switch must be released.
(2) set the sun visor motor
① turn the ignition switch;
② sun visor must be closed;
③ Close button is pressed visor 3 about 20 s;
④ when set, the sun visor is moved backward about 200 mm;
⑤ after the sun visor is again fully closed setting, release the button.
4. Close the glass window emergency
Figure 3
When power failure panoramic roof, the front portion and the visor cover glass plate may be manually hexagonal wrench (FIG. 3) through the inner.
Further, when washing washing room, sunroof must be completely closed. Not use the direct impact of high pressure water jets of water roof weather strip, to avoid high pressure water cannon causing leakage skylight. When rotated manually, it requires large force is applied, because the motor and the drive means are linked.
Third, the lighting system
1. headlamp
Tiguan equipped smart car headlamp system (FIG. 4), which includes a self-cleaning system, servo steering and a plurality of illumination modes selected function.
Figure 4
(1) Automatic cleaning headlamp
Intelligent Vehicle headlight systemEC (the AFS), an optional dynamic servo steering headlight when cornering, the system may provide the best lighting effects according to the magnitude of the steering angle. The vehicle speed is below 40 km / h and simultaneously enable or turn the steering wheel when the steering lamp, to illuminate the road side system (illumination with steering).
headlamp dipped beam or the optical switch is turned on, if the windshield wiper switch on the steering wheel is pulled at least 1.5 s, the front windscreen wiper after every fifth working headlamp cleaning system 1 . Ldquo headlamp cleaning system; working time rdquo; can be set to 0 ~ 10 s. After completion of the installation of the headlamp or headlamp cleaning system initialization, the entire system must be vented in order to ensure proper operation of telescopic cylinders and nozzles.
(2) illumination mode
The headlamp system includes intercity mode (C), intercity mode (C1) of the illumination function with rain, urban pattern (V) and highways mode (E, E1, E2).
intercity mode ① (C, FIG. 5)
Figure 5
intercity mode is the fundamental mode. In case there is no other mode is enabled, the system is always enabled mode (i.e., the speed at 0 ~ 15 km / h and 50 ~ 90 km / h) which is closest to the low beam light pattern.
② intercity mode (a C1) (FIG. 6)
with the rain illumination function of Figure 6 [123 ]
this function is to reduce the reflection on a wet road surface. After the function is enabled, the beam is wider in front of the vehicle, and to shorten the illumination range (the driver’s side of the condenser lens to the left and to the low beam light; condensing lens is set to only the front passenger side beam light).
Mode Enable intercity rain conditions with lighting function as follows. .
a light switch knob to the “AUTO”;
b low light intensity outside the vehicle;..
c speed at 15 ~ 70 km / h of the range;.
d wiper enabled more than 2min.
is turned off by the illumination function with rain intercity mode. .
a vehicle speed exceeds 70 km / h;.
b wiper off exceeds 8 min;
c the light switch knob to the “low beam light” position.
③ urban mode (V, Figure 7)
Figure 7
major urban lighting pattern is adjacent to the road, such as sidewalks, intersections, crosswalks, etc., thereby improving safety when driving in urban areas. In this mode, the front of the vehicle lighting range is wider. To avoid the oncoming vehicle caused by flare, lighting shorter range (the driver’s side of the condenser lens to the left and to the low beam, a condenser lens at the front passenger side of the base position on the left side). Urban model is the advantage in the village or town that light areas can also have the best lighting effect. This mode is turned on when the vehicle speed is 15 ~ 50 km / h.
urban model vehicle speed is 15 ~ 50 km / h enabled range, urban model headlight beam range is shortened, the light illumination range ahead of the vehicle is wider.
④ highway mode E, E1, E2 (FIG. 8)
Figure 8
When the system enters the highway mode headlamp when a greater range of illumination light, and emits the illumination light more to the left lane, the illumination intensity will increase as the vehicle speed increases, vehicle speed exceeds 120 km / highway mode can achieve the maximum effect when h.
highway driving when the vehicle speed is higher than 140 km / h exceeds 10 s, parking lights automatically opens and the low beam lamp. If the vehicle speed is below 65 km / h exceeds 2 min, the lights are turned off.
(3) a steering servo (FIG. 9)
Figure 9
Asymmetric automotive lighting uses, for the right pedestrian traffic, turns left toward the left side as the lamp operating lamps, a large rotation angle(Not to exceed a predetermined limit position required), the right auxiliary lamp work, smaller angle of rotation; turn right toward the right side as the lamp operating lamp, the rotation angle is large, the left auxiliary lamp working, the rotation angle slightly smaller.
integrated in the steering headlight lighting function, the function can be turned right or left separate lamp, front lights for illuminating the vehicle surroundings, the lamp “to light” by the body feature The control unit (BCM) control.
activating headlights and the AFS (Adaptive) under the following conditions.
① The light switch is switched to the “AUTO” position;
② near / high beam is turned on (light outside of the vehicle in accordance with information received from the light sensor to identify, whether to enable AFS) ;
③ speeds above 10 km / h (start dynamic headlights);
④ speeds above 15 km / h (start AFS adaptive mode).
If the light switch is in the “AUTO” position, the fog can not be opened. Fog lights need to open the switch to the other position, the AFS lighting mode and the dynamic headlights to be turned off. If skidding, with AFS dynamic illumination mode headlights function is turned off, the headlamp back to the basic position. AFS adaptive headlights automatically adjusts light near / high beam distribution. Light distribution can be adapted to different lighting modes by certain driving conditions (such as in urban driving or motorway).
(4) gas discharge headlamps
equipped vehicle headlamps using gas discharge control valve, the control principle as in FIG. (FIG. 10).
10
When replacing the headlight discharge lamp with a yellow mark on the gas discharge headlamp pre work member, you must disconnect the ground wire of the battery. The operation then becomes the optical switch 1, in order to eliminate possible high-voltage band. Control and diagnostic
(5) System
The gas discharge headlamp control automatic headlamp illumination range includes a self-diagnosis function, the process can be simplified troubleshooting. To carry out fault diagnosis and fault diagnostic VAS5051B need to use the “Guided Fault Finding” mode. The equipment of the vehicle, the vehicle body can be controlled by BCM home time matching execution unit, the driving light beam assisted matching, matching the time away from home, rain and light sensor encoder, matching headlamp cleaning system, wiper motor control unit code, date Room lights with auxiliary lighting with coding and delay matching.
11
for controlling the headlights on, AFS control unit in accordance with steering wheel steering angle and direction , vehicle speed, engaged gear R, the vehicle level sensors, wiper enabled, the external light intensity, the rotational position of the light switch and the wheel slip signal from the ESP. AFS main control unit on the left (FIG. 11) the right of center console, two sub-control unit is directly mounted on the headlamp (FIG. 12). The control unit via the CAN data bus to exchange information with each other. If other corner irradiation range and a headlamp control unit J745 is encoded, the headlight must perform basic setting.
12
Fourth, the body control unit the BCM
In the vehicle electrical system concept way, the cancellation independent comfort system control the BCM (FIG. 13) unit mounted on the driving side of the switch fuse box centralized control, so that the system is simple, easy maintenance.
13
Control
of the BCM feature
Safety features include the BCM feature central locking system, interior lights control, wiper control, the fuel pump pre-operation control, horn control, generator control, turn signal control, the control external lights, rear window heating relay control, load management and control terminals. Is
(1) Load Management
In order to prevent the battery from the load management capabilities over-discharge damage, so that the vehicle can not be started. When the vehicle ignition switch is turned on, the alternator starts, the system management mode into the load. When the battery voltage is below 12.7 V, J519 instructionSystem of the engine idle speed; when the battery voltage is below 12.2 V, heated seats, heated rear window, heated exterior mirrors, automatic air conditioning and infotainment system are sequentially closed.
(2) Light Management
the BCM can control the vehicle interior and exterior lighting, has the following advantages
① may control the opening and closing of a single bulb;
[ 123] ② duty control (PWM) maximum power of the lamp, the lamp life can be extended;
③ tail light can be controlled by changing PWM;
④ diagnosis bulb and wiring harness (positive electrode shorted , short circuit and open circuit loop)
⑤ in the case of a short circuit or open circuit will automatically disconnect the power (instead of the fuse function).
(3) a central control lock
Central locking system of the BCM control synthesis, including security features, this feature is implemented using the filler cap door motor control and the fuel tank. An integral component of this unit is to receive remote central locking device, at the same time includes an electronically controlled opening and closing windows, skylights and anti-theft security system.
BCM more further control means comprises a power supply relay 15 (ignition), the power supply relay No. 50 (start), a relay terminal 75 (when the engine is started, disconnect the electrical equipment), two-tone horn relay J4, rear window heater relay J9, adjusting the motor means and the internal cleaning of the instrument cluster backlighting.
V., CAN network topology control unit
the CAN network topology as the control unit (FIG. 14).
FIG. 14
J623– engine control unit? J745– headlamp control unit? J667, J668– sub-control unit headlamp ? J271– automatic transmission control unit? J446– reversing radar control unit? J104 –ABS control unit? J492– four-wheel drive control unit? J791– semi-automatic parking assist control unit? J500– electronic mechanical steering controlSystem unit? J540– electronic parking brake control unit? J520– roof control unit? J394– shade control unit (including a motor)? J245– days glazing control unit (including a motor)? E221– multifunction the steering controller? G85– steering sensor? J255– automatic air conditioning control unit? J136– seat control unit? J519 –BCM control unit? J386– driver side vehicle door control unit? J387– front passenger-side door control unit? J388– left rear control unit? J389– right rear door control unit? G397– rain sensor? J400– wiper? J527– steering electronic control unit? J533– gateway? J503 -?? J412– radio navigation camera phone control unit J772– G197– compass sensor control unit
(Meng super)
?