What does acceleration g-value mean?
1 Answers
It refers to the acceleration generated during vehicle movement, including lateral acceleration (lateral g-value) and longitudinal acceleration (longitudinal g-value). 1G equals 10m/s², meaning the vehicle can accelerate to 10 meters per second in one second, equivalent to 36 kilometers per hour. In automotive acceleration performance testing, the average acceleration measured within a certain acceleration range divided by the gravitational acceleration G yields the average acceleration g-value. Below are extended details: 1. Vehicle acceleration time: Also known as the vehicle's acceleration capability, it refers to the ability of a vehicle to rapidly increase its speed under various operating conditions. There are generally two representation methods: one is the standing start acceleration time (0-100 km/h acceleration time), and the other is the overtaking acceleration time, which reflects the vehicle's overtaking capability. 2. Acceleration capability: Vehicles exhibit stronger acceleration capability in lower gears. Therefore, when testing the 0-100 km/h acceleration time, vehicles typically start in first gear with the throttle fully depressed, shifting to second gear only when the engine speed reaches the redline zone. Most vehicle models can achieve 0-100 km/h acceleration in second gear; if not, shifting to third gear is required. During overtaking, to achieve better acceleration capability, it is generally necessary to downshift by one gear, such as from fifth to fourth gear, before accelerating to overtake.
