What is the normal generating capacity of the Jiefang J6?
4 Answers
The normal generating capacity of the Jiefang J6 is around 24.4V. The generating capacity of a vehicle is related to its engine. Below is a detailed introduction about automobile engines: 1. Overview: The automobile engine is the device that provides power to the vehicle, determining its power performance, fuel economy, stability, and environmental friendliness. Depending on the power source, automobile engines can be divided into diesel engines, gasoline engines, electric vehicle motors, and hybrid power systems, among others. 2. Others: Common gasoline and diesel engines belong to reciprocating piston internal combustion engines, which can convert the chemical energy of fuel into the mechanical energy of piston motion and output power externally. Gasoline engines have high rotational speeds, are lightweight, produce less noise, are easy to start, and have low manufacturing costs. Diesel engines have a high compression ratio, high thermal efficiency, and better economic performance and emission performance than gasoline engines.
My Liberation J6 has been running for five years, mainly for hauling goods on long trips, and I pay close attention to the dashboard data. The normal power generation for this truck's alternator should be around 27.5V to 28.5V. I've personally seen the mechanic measure it with a multimeter—it reaches 28 volts even at idle. If you're running the headlights, air conditioning, plus a car fridge, and the voltage drops below 26 volts, that's dangerous—most likely the alternator brushes are worn or the voltage regulator is faulty. Once, my battery suddenly died, and it was only because I noticed the voltmeter hovering around 25 volts that I found the issue. Truck electrical systems are complex; unstable voltage can easily fry the ECU module, and repairs can cost way more than just replacing the alternator.
With twenty years of experience in truck repair, I can diagnose issues in the Jiefang J6's 24V system with my eyes closed. Measuring power generation depends on operating conditions: during cold starts, the voltage can surge to 29V, but it must stabilize at 28V±0.5V to be considered normal. The other day, a driver reported flickering cabin lights—I used a clamp meter to measure the output current at only 35A, significantly lower than the rated 50A. Always check belt tension first; if it's too loose, the RPM drops, reducing power output by 20%. If voltage exceeds 30V, inspect the rectifier bridge immediately—last year, a swollen battery was caused by overvoltage.
Running a fleet with over a dozen J6 trucks, the alternator condition directly impacts uptime. Factory spec for new trucks is 28V output, but in real-world operations anything between 25-29V works. The critical factor is voltage fluctuation: if it drops to 24V at idle and only recovers when revving, that's usually the regulator failing. We perform quarterly maintenance with battery testers - any discharge depth exceeding 70% means alternator inspection. Just replaced Unit #6's alternator with a 180A model last week. Now shows 29.8V at cold start and holds steady at 27.2V with AC on - that's textbook healthy performance.
