(62 products available)
Ready to Ship
Ready to Ship
The 4jh1 alternator is a vital component of the 4jh1 engine system. It is responsible for generating electrical power to run the engine. Depending on the internal construction, the 4jh1 alternator can be divided into two main types.
Self-Excited Alternator
A self-excited alternator is an alternator that uses a small amount of current generated by the alternator itself to power the control circuit. This allows the alternator to operate autonomously without relying on an external power source or control circuit. It is self-controlled, and it is mainly used in isolated or non-grid-connected power systems.
Externally Excited Alternator
An externally excited alternator is an alternator that needs an external power source to supply current to the control circuit. This external power source is often a battery or a power supply connected to the control circuit. The external excitation allows for better control of the output voltage and current, making externally excited alternators suitable for applications requiring precise voltage regulation and control.
Depending on the mounting type, the 4jh1 alternator can also be classified into two main types.
4jh1 Vertical Alternator
The 4jh1 vertical alternator is alternately mounted vertically in a 4jh1 engine. In this position, the alternator can be easily accessed and serviced. It also has better cooling performance due to the top-down airflow. The vertical mounting alternators are less prone to moisture and debris, making them ideal for off-road and dusty environments.
4jh1 Horizontal Alternator
The 4jh1 horizontal alternator is mounted horizontally to the engine. This horizontal mounting is beneficial in situations where space is limited, such as in compact engine bays. Horizontal alternators are often lighter and more efficient. However, they tend to be less accessible and have poor cooling performance.
The specifications of the 4JH1 alternator are as follows:
Output Voltage
The 4JH1 alternator generates a steady output voltage of 12V, which is the standard voltage for most vehicle electrical systems.
Output Current
The alternator produces 60-80 amperes of current, depending on the model. This output current is sufficient to power all the electrical components in a vehicle.
Rotation Speed
The 4JH1 alternator's rotational speed at 1,000 to 6,000 alternator revolutions per minute (RPM) delivers a consistent electrical current for the vehicle's needs.
Cooling
The alternator features a cooling system that utilizes ambient air to maintain an optimal operating temperature, ensuring efficiency and longevity.
Size
The 4JH1 alternator is relatively compact, with dimensions around 200 x 120 x 160 mm (L x W x H). Its small size makes it suitable for various vehicles without taking up much space.
Weight
These alternators are lightweight, typically weighing between 5-7 kilograms. The reduced weight contributes to the overall fuel efficiency of the vehicle.
Voltage Regulation
The 4JH1 alternator is equipped with a voltage regulator that ensures a stable voltage output, regardless of the engine speed. This feature protects sensitive electrical components from damage due to voltage fluctuations.
Bearings
It uses high-quality bearings, usually sealed or shielded, to minimize friction and reduce noise. These bearings contribute to the alternator's smooth operation and durability.
Mounting
The 4JH1 alternator is mounted using a belt-driven system, typically on the engine's front end. This design allows the alternator to be easily installed and maintained.
Maintenance of the 4JH1 alternator is essential for its optimal performance and longevity. Here are some maintenance tips:
The choice of a suitable 4JH1 alternator for a specific application is influenced by several factors. These include;
Output Rating
The expected electrical load that will run on the alternator-powered supply determines this rating. The total sum of all electric components, like lights, sound systems, and auxiliary devices, should be analyzed. This ensures that the alternator selected meets or exceeds the calculated value. This is to ensure that the alternator selected can comfortably support all electrical requirements without strain.
Physical Dimension
The mounting space and alternator's physical dimensions need to be compatible. The weight of the alternator should also be considered, as this can affect the mounting options and the required support.
Mounting Arrangement
The 4jh1 alternator's mounting arrangement must be compatible with the engine's mounting provisions. This can be ensured by verifying that the selected alternator's mounting style, such as the foot or flange type, and the available mounting space and accessories are suited for the engine.
Rotational Direction
The rotational direction of the 4jh1 alternator should be compatible with the engine's rotational direction. This is to ensure that the alternator belt drive system is correctly aligned and that the alternator operates efficiently and effectively.
Voltage Regulation
The voltage regulation feature of the alternator is essential for maintaining a constant output voltage level, regardless of load variations. This is to ensure that the electrical and electronic components supplied by the alternator are protected against voltage fluctuations, thus enhancing their performance and lifespan.
When replacing an alternator, there are a few tools that one will need for the process. Here is a list of those tools:
After getting the tools, follow the steps below to replace the alternator:
Q1: How long does a 4jh1 alternator last?
A1: The lifespan of the 4jh1 alternator depends on usage, environmental conditions, and maintenance. Generally, it lasts between 5,000 to 8,000 hours of operation. Signs of wear include reduced electrical output or physical damage.
Q2: Can a damaged 4jh1 alternator be repaired?
A2: Yes, a 4jh1 alternator can be repaired. The repair process is more cost-effective than the replacement. However, if the damage is severe or multiple components are affected, replacement might be necessary.
Q3: What are the benefits of using a genuine 4jh1 alternator?
A3: A genuine 4jh1 alternator is designed for specific engines. It ensures compatibility, reliability, and optimal performance. Genuine alternators typically have a longer lifespan and require fewer repairs compared to aftermarket ones.
Q4: What is the warranty period of a 4jh1 alternator?
A4: The warranty period of a 4jh1 alternator varies depending on the manufacturer and supplier's terms. Generally, it ranges from 6 to 12 months. Some suppliers offer an extended warranty for specific products.
Q5: Can the 4jh1 alternator be used on other engines?
A5: The 4jh1 alternator is designed for specific 4J diesel engines. It is compatible with various models like ISUZU D-Max, D-MAX, MUX, MU-7, N-series trucks, F-series trucks, and other ISUZU brands. For other engines, consult the supplier to verify compatibility.The web search volume for the keyword "4jh1 alternator" in the Vehicle Parts & Accessories category shows a stable pattern with an average monthly web search volume of 10. Over the past year, there has been no significant change in web search volume, maintaining a consistent 0% rate for both three-month and one-year intervals.
Analyzing the monthly data, the keyword experienced a peak web search volume of 10 in January 2024, whereas the remaining months of the year recorded zero web searches. This pattern suggests a sporadic interest in this specific alternator model, with no noticeable seasonal trends or fluctuations throughout the year.
The consistent zero percent change in web search volume over the year-long period indicates a stable, albeit low, demand for the "4jh1 alternator". There were no significant peaks or valleys in the search trends, which could suggest steady but limited interest in this vehicle part. This data is crucial for businesses and marketers in the vehicle parts sector, as it helps in forecasting demand and planning inventory for this particular product.
浙公网安备 33010002000092号
浙B2-20120091-4