The Quantificat Evaluation Method Of Passenger Car’s Drivability Based On User’s Drive Mode

Driving performance, known as drivability, is the acceleration including comfort. Drivability is the measure of automotive powertrain system calibration development of a kind of important indicators, and the car’s performance, fuel economy, comfort have close relations, is the important embodiment of car inner quality. Driving(drivability) can test refers to the car at the driver will respond and smooth driving, such as acceleration, coast, brake, etc., mainly reflects the auto calibration style of each assembly and coordination relationship.Our company in the past ten years of independent development process, has experienced from the introduction to draw lessons from to independent research and development step of growth. In the development of autonomous vehicle engine and transmission matching as well as the beginning of the chassis set-up, main work outsourced overseas engineering services company. From the initial cannot effectively acceptance, eventually the subjective evaluation into the development process. Through continuous learning and fumble, to form the effective methods have their own characteristics. In the current new project development process, including powertrain and chassis, each system has been able to put forward according to the standard of r&d engineers car scoring for subjective evaluation and objective test data with the combination of engineering development goal setting, calibration development guidance work, and the effective periodically and final acceptance. Because there is a clear goal, thus clear the development cycle and spending, to ensure the new development project time node, reduce the cost.The author in recent years has been involved in multiple independent development model of component matching evaluation system calibration work, in the early subjective evaluation work, in the work that rely on subjective evaluation models for development work, the late through cooperation in the study and practice, gradually set up out of the objective test system suitable for their own use, and tested the model on the models, to form the subjective evaluation and objective test, the method of combining subjective and objective evaluation system is established. In the present work, with the aid of the need of our company, overseas project, application of the CAN bus running recorder, record the user driving habits in overseas markets, combined with the investigation of market and users living background, study differences between the market users usage patterns.