What does AMS in vehicles mean?
3 Answers
AMS in vehicles stands for the power management system. Its function is to enable the generator to determine the battery status through a current sensor, change the generator's load based on the vehicle's driving conditions, control the battery's charging and discharging, improve fuel consumption, and extend the battery's service life. The working principle of AMS is: when the engine is operating normally, the generator supplies power to the electrical equipment and charges the battery. During startup, the battery supplies power to the starter. The engine drives the generator to rotate through a belt, allowing the engine's speed to change, and the generator's output voltage changes accordingly.
I'm quite fascinated by automotive electronic systems. The onboard AMS is essentially the vehicle's exhaust after-treatment management system, primarily used in diesel vehicles. It controls the exhaust treatment process, such as using the SCR module to convert harmful nitrogen oxides into harmless nitrogen and water, and also incorporates a DPF filter to remove particulate matter. The system monitors exhaust temperature and pressure via sensors, automatically adjusting urea injection to ensure emissions compliance. If the AM system malfunctions, a warning light will appear on the dashboard, and the vehicle may exceed emission standards, potentially affecting annual inspections or even causing power loss. When helping a friend repair their car, I once discovered clogged injectors due to poor-quality urea, which was troublesome and expensive to fix. Understanding how it works can help us avoid unexpected stops or fines during daily driving, especially checking the urea tank before long trips as a basic habit. Maintenance costs aren't high but can save significant money.
As a long-haul driver, the AMS system is essentially our exhaust after-treatment system for purifying emissions. It operates automatically during daily driving, but requires regular urea fluid top-ups—I always check before hitting the highway to avoid mid-trip warning alarms. Once, I forgot to check, resulting in insufficient engine power, forcing an emergency roadside urea refill. That experience taught me the importance of maintenance. System failures can trigger red emission-exceeded warnings, compromising driving safety—I recommend quarterly injector cleaning. Simple upkeep extends lifespan, like using reputable urea brands to prevent impurities, ensuring cleaner exhaust and peace of mind on the road.
