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What are the indicators

What are the indicators

What are the indicators


Engine fault indicator

The engine fault indicator light is represented by CHECK ENGINE or MIL. It has two states and indication contents. One is always on, indicating that the engine electronic control system has a fault; The other is flashing, indicating that the fault is still affecting some performance of the engine (such as exhaust emissions, etc.)

Replace the lubricating oil indicator

The indicator light for lubricating oil change is indicated by "CHANGE OIL ''. For example, the" CHANGE OIL '' light on the instrument panel of Buick station wagon lights up to remind the driver that "the oil should be changed". After changing the oil, the indicator should be "zeroed".

Hazard warning lamp

The hazard warning lamp is used to warn other vehicles and pedestrians when there is a major fault or emergency. The hazard warning signal is represented by the front, rear, left and right turn signals flashing at the same time.

Related News

Basic structure of switch 2022-11-22 17:52:00
The diode in parallel on the relay plays a protective role to prevent the crystal triode from being damaged due to high voltage generated by self induction when the relay is powered off and released. Component specification: J relay 4098 operating voltage 6V V1V2 crystal triode 9014 VD crystal diode 2CP10 or 1N4001 R adjustable resistor 100k C electrolytic capacitor 100u/6V K1 button switch. The simplest switch has two pieces of metal called "contacts". When the two contacts contact, the current will form a loop. When the two contacts do not contact, the current will open. When selecting contact metal, the degree of corrosion resistance shall be considered, because most metals will form insulating oxides after oxidation, making the contact unable to work normally. Factors such as conductivity, hardness, mechanical strength, cost and toxicity shall also be considered when selecting contact metal. Corrosion resistant metals are sometimes plated on the contacts. Generally, it will be plated on the contact surface of the contact to avoid affecting its performance due to oxides. Sometimes non-metallic conductive materials, such as conductive plastics, are used on the contact surface. In addition to the contacts, there will also be movable parts to make the contacts conductive or non conductive. The switches can be divided into toggle switch, key switch, Rocker switch, etc. according to the different movable parts, and the movable parts can also be other types of mechanical links.
National standards for terminals 2022-11-22 17:50:00
This standard is equivalent to the international standard IEC455 (1988) General Rules for the Identification and Application of Alphanumeric Systems for Equipment Terminal Blocks and Specific Conductor Terminals. Subject Content This standard specifies various methods for identifying terminals of electrical equipment (hereinafter referred to as equipment), and formulates a general rule for identifying equipment terminals and specific wire terminals with an alphanumeric system. This standard is applicable to the identification of terminal blocks of equipment (such as resistors, fuses, relays, contactors, transformers, rotating motors, etc.) and combinations of these equipment, as well as the identification of specific wire ends. If necessary, the detailed application of these general rules to some products and the necessary auxiliary identification methods can be given in the relevant standards. recognition methods One or more methods can be used to identify equipment terminals and specific wire terminals: a. The marking system of related products can be used to determine and identify the actual or relative position of equipment terminals or specific wire terminals; b. Use the marking system of relevant products to determine and identify the color marking of equipment terminal blocks and specific wire terminals; c. Graphical symbols specified in GB5465 shall be adopted. If auxiliary symbols are required, they shall be consistent with the figures in GB4728; d. The alphanumeric symbols specified in Chapter 5 of this standard shall be used.
Basic performance of connector 2022-11-22 17:47:00
The basic performance of connectors can be divided into three categories: mechanical performance, electrical performance and environmental performance. Another important mechanical property is the mechanical life of the connector. Mechanical life is actually a durability index, which is called mechanical operation in the national standard GB5095. It takes one insertion and one extraction as a cycle, and takes whether the connector can normally complete its connection function (such as contact resistance value) after the specified insertion and extraction cycle as the judgment basis. 1. Mechanical property As far as the connection function is concerned, the insertion and extraction force is an important mechanical property. Insertion and pull-out force is divided into insertion force and pull-out force (pull-out force is also called separation force), and their requirements are different. There are provisions on maximum insertion force and minimum separation force in the relevant standards, which shows that from the perspective of use, the insertion force is small (so there are structures with low insertion force LIF and no insertion force ZIF), and if the separation force is too small, the contact reliability will be affected. The insertion and withdrawal force and mechanical life of the connector are related to the contact structure (positive pressure), the coating quality of the contact part (sliding friction coefficient) and the dimensional accuracy (alignment) of the contact arrangement.

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