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Electrical Parts
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Vendor: Isuzu
Time Relay 8970405010 8970405011 12V With 6 Pins for Isuzu 3LD1 4JB1 4JG1 4JG2 4LB1 4LC1 4LE1 4LE2
Regular price $ 45 -
Vendor: Doosan
Starter Relay 544-00007 For Excavator DX225LC DH220-5
Regular price $ 79 -
Vendor: Mitsubishi
Preheating Relay MR8B-451 MM43128202 MM43128201 for Tractor 7000 7200 7205 7260 7265 7300 7305 7360SS
Regular price $ 5 -
Vendor: Kubota
OEM NEW MR82BL-081 JIDECO 91008V Preheating Relay Fit for Kubota Yanmar 12V
Regular price $ 15 -
Vendor: Honda
For Honda MAIN RELAY ASSY ARX1200N ARX1200T AQUATRAX F-12 F-12X R-12 R-12X ARX
Regular price $ 25 -
Vendor: Bobcat
2pcs Relay 7219044 For Bobcat A770 S450 S510 S530 S550 S570 S590 S595 S630 S650 S740
Regular price $ 19 -
Vendor: John Deere
12V Relay RG60042 Fit for John Deere 17G 26G 35D 50D 27D 17D 4100 Compact Excavator
Regular price $ 15 -
Vendor: Yanmar
Safety Relay 129136-77100 for Yanmar 3TN84L-RTBA 3TN84L-RYB 3TN100L-YBA Engine Komatsu PC30R-7 PC30-7
Regular price $ 359 -
Vendor: Kubota
Controller 16415-65660 16415-65662 for Kubota Engine D902 D905 D1005
Regular price $ 25 -
Vendor: Hope Backhoe Parts
Good quality spare parts controller 6041232232 for 4WG180 transmission
Regular price $ 79 -
Vendor: Others
24V S6700E Speed Control Unit Engine Governor Controller Compatible with Generator Genset
Sale price $ 78Regular price $ 99 -
Vendor: Caterpillar
16A11-17001 time relay Controller Control Unit For MITSUBISHI CAT E307B
Regular price $ 179
What are the electrical parts?
The electrical system has three main functions. One is to power the starter motor through the battery, causing the starter motor to run and complete the initial stage of the stroke work through the crankshaft connecting rod structure, and exit the next working system after the engine is started, so this part is sometimes called the engine's The main component of the starting system is the starter motor; the second is to ensure the normal operation of the engine during work, ensuring normal oil supply, normal air intake, and starting protection devices when encountering high temperatures and high pressures. The main components include various sensors and switches. Third, during operation, the charger is driven by the engine to charge the battery and ensure that the battery is fully charged. The main component is the charger.
The electrical system can be classified according to the speed control system of the engine. The electrical system of the machine control is relatively simple, including only the starter, charger, and switch with sensor function. Of course, some assembly plants may have additional wiring in the control box of the unit. , a sensor is installed in the engine for control; in addition to the mechanical starter and charger, the ESC also has an electronic speed regulator and actuator; while the EFI/electronic control is more complex, and its main features are various There are many sensors and they are controlled by a computer board.
1. Battery
The battery is generally not a product that comes with the engine, but is selected, tested and matched by the assembler. The usual voltage is 12V or 24V, and its main function is to power the starter motor, ECM and other electrical equipment. Under normal circumstances, when the engine is running once, the battery is fully charged, because although the battery is discharged in the early stage, it will be fully charged again during the engine running process.
2. Starting motor
The essence of a starter motor is an electric motor. The principle is the magnetic effect of current, which generates a magnetic field through energization and promotes the rotation of the starter. The starter is installed on the side of the timing gear. When starting, the probe of the starter stretches out, contacts the timing gear box gear, and pushes the gear to rotate. After reaching a certain speed, usually 250-300 rpm, the probe It will retract. At this time, the engine can run normally and the work of the starter motor is completed.
An introduction to the main systems of the engine - Youjia
3. Charger
It is also called an alternator, so it is essentially a small generator based on the principle of electromagnetic induction. Driven by the engine, the coil cuts the magnetic induction lines to generate current and supplies it to the battery. The gear of the charger is connected to the crankshaft gear through a belt, and its power is also provided through the crankshaft. The charger is equivalent to a microcosm of a diesel generator set and usually includes excitation windings, etc. We will discuss this later when we introduce the electric ball.
An introduction to the main systems of the engine - Youjia
4. Sensors and switches
Sensors and switches are electrical devices and serve a similar purpose. Sensors and switches feedback information to the computer board or controller through signals, so that the computer board or controller can perform corresponding actions according to the corresponding program. The difference is that the sensor generates pulse signals and transmits information to the control center continuously, while the switch has a threshold, and it is energized only when it exceeds or falls below the threshold and feeds back to the control center. Sensors usually include temperature sensors, pressure sensors, rotational speed sensors, etc., and switches are mainly temperature switches and pressure switches.