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Electrical Parts
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Vendor: Hitachi
4259333 Oil Pressure Sensor Pressure Switch for Hitachi Excavator EX100 EX120 EX150 EX200-2 EX200-3 EX300-3
Regular price $ 45 -
Vendor: Doosan
2547-1015 Revolution Speed Sensor for Doosan Excavator DH220-5 DH220-7 DH225-7 SOLAR S140WV S160WV S180WV S200WV S210WV
Regular price $ 45 -
Vendor: ISUZU
Water Temperature Sensor 8-98156648-0 8981566480 for Hitachi Excavator ZX110-3 ZX120-3 ZX330-3 ZX450-3 ZX850-3 Isuzu Engine
Regular price $ 49 -
Vendor: Caterpillar
245-4630 2454630 Engine Timing Speed Sensor for Caterpillar 325D 330C 325D L 120H 120K 953C 963C Excavator 322C 322C FM
Regular price $ 25 -
Vendor: Cummins
Water Coolant Temperature Sensor 3915329 for Cummins Engine 4BT K19 M11 N14 NT85
Regular price $ 25 -
Vendor: Volvo
VOE11170071 Pressure Monitor Sensor Switch Sender For Volvo L120D L120E L150E L180D L180E L180D L180E L220D
Regular price $ 89 -
Vendor: Caterpillar
Pressure Switch Sensor 126-2938 106-0096 126-2938X03 With Big Circle Plug For CAT Excavator E320A E312B E320B E320C 311 312 315
Regular price $ 36 -
Vendor: Others
Magnetic Pickup MPU Generator Speed Sensor MSP6724 MSP 6724 Diesel Genset Speed Sensor Fits For Generator Set
Regular price $ 36 -
Vendor: Komatsu
High Pressure Sensor 49MPa 7861-92-1610 for Komatsu Excavator PC100-6 PC200-6 PC300-6
Regular price $ 82 -
Vendor: Caterpillar
AS-Speed Sensor 116-6680 1166680 For Caterpillar CAT Truck 797 797B 797F Tractor D3K XL D4K XL D5K LGP Loader 914G 924G
Regular price $ 80 -
Vendor: Hitachi
4614912 4614910 Throttle Locator Sensor Throttle Position Sensor For Hitachi EX200-5 EX300-5 Excavator ZAX230 ZAX240 ZAX330
Regular price $ 42 -
Vendor: ISUZU
8972003080 8-97200308-0 throttle acceleration sensor for Isuzu 6WF1 6WG1 CXZ truck accessories
Regular price $ 159
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.