Transparent Sheet Plastic,Clear Pvc Sheet,Pvc Plastic Sheet,Pvc Sheet Price SUZHOU OCAN POLYMER MATERIAL CO.,LTD , https://www.ocanplastics.com
The BJ K 6790 passenger bus is a medium-sized ordinary urban passenger vehicle designed and developed by the Beijing Bus Factory based on market demand. The vehicle electric appliance adopts the negative pole grounding, the positive pole is controlled by the power main switch, and the 12V electric system adopts the modularized harness design to divide the whole vehicle wiring harness and power distribution board into several major modules. The central distribution board is used as the core and several connectors are used. Partially connected, strong interchangeability, easy maintenance; spare wire is left on the wire harness, which can be used interchangeably between the electronically controlled air supply device and the traditional ignition method, and the two-sided fuel sensor wire harness and single/double door control are reserved. Harness and oil pressure gauge wire harness can adapt to a variety of variants, thereby reducing production costs. At the same time, the vehicle adopts the Luko 1070 KTIQ3 front gasoline engine chassis of the Second Automobile Company, and the EQ6100-1 (electronically controlled air supplement) engine meets the environmental protection requirements.
Electrical system principle:
meter:
This part of the circuit consists of a combination table, hand brake switch, oil pressure sensor, pneumatic switch, air pressure switch, oil pressure sensor, water temperature sensor and fuel gauge sensor. The instrument used is the 7B118 type combination meter produced by Zhangjiagang Leda Auto Electric Co., Ltd. The table applies to large and medium-sized luxury high-speed passenger cars and trucks, and its mechanical speed odometer speed ratio is 1:624.
Electronic control unit:
The electronically controlled air control unit is a feature of this vehicle. In the past, the ignition devices of gasoline vehicles consisted of ignition coils and distributors. The call for environmental protection in the society is increasing day by day. In order to improve emissions and meet the needs of the current green car models, Dongfeng Motor Company adopted the Dis-tributorless Ignitbn System (DIS) developed by Motorola in the EQ 6100-1. Closed-loop control system.
Through the control of ignition and air-fuel ratio, it is possible to greatly reduce the emission of pollutants while reducing the power and economy. At the same time, in order to improve the reliability of driving and maintenance, the lines of ignition coils and distributors are reserved. When problems occur in the electronically controlled air control unit, they can be replaced with ignition coils and distributors in time to ensure driving.
Fog lights:
This part consists of fog lamp control switch, lamp relay, fog lamp indication, front fog lamp and rear fog lamp. According to the requirements of the new standard, the front and rear fog lamp control switches should be separated, and the rear fog lamp can only be turned on when the headlight or front fog lamp is turned on (see 4.3.14 of GB 4785-1998 for details). This will be modified in the next round of improvement designs.
Alarm and steering:
This part consists of a hazard alarm signal relay, flasher, combination switch (steering part) and hazard alarm signal switch. The reason why the dangerous alarm relay is set to be connected to the fire wire and separated from the flasher is mainly to consider the following points: First, in the case of no problem with the total insurance, as long as the danger alarm signal switch is turned on, both sides of the flash can flash the alarm It is not necessary to turn on the main power switch firstly; secondly, when the vehicle fails to be repaired on the road, the hazard alarm signal switch is turned on, and the hazard signal relays are used to start the blinking of both side turn signals. When the vehicle is overhauled again, the flasher is used to start the single-side turn signal lamp work. This avoids the overload burn-out caused by long-term work of a single flasher, and ensures that the turn signal indicator works normally when the vehicle is traveling.
Gating:
This part consists of an outside door control key switch, a door pump solenoid valve, a door control switch, a door trip switch, a step light and a door open indication. One of the outside door control key switch is optional. The door limit switch has an anti-pinch function. In addition, a rear passenger door harness is also reserved in the harness.
speaker:
This part consists of horn relays, horn button switches, bass horns and tweeters. The horn relay is controlled by a ground wire, and the ground wire is controlled by the horn button on the steering column. Day passenger compartment lights and luggage compartment lights. This part consists of passenger compartment ceiling light switch, passenger compartment ceiling light, luggage compartment light switch and two luggage compartment lights. This part of the circuit mainly provides lighting for passengers.
Reversing and brake lights:
This part consists of a reverse switch, a reverse buzzer, a reverse light, a reverse light, a brake switch, and a brake light.