On the control of engine start/stop dynamics in a hybrid electric vehicle
On the control of engine start/stop dynamics in a hybrid electric vehicle
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DOI：
10.1115/1.4000066
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发表时间：
2009-11
影响因子：
1.7
通讯作者：
M. Canova;Y. Guezennec;S. Yurkovich
中科院分区：
文献类型：
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作者：
M. Canova;Y. Guezennec;S. Yurkovich
起动机/交流发电机技术被认为是一种易于实现的混合动力汽车(HEV)配置，在不影响消费者可接受性的情况下实现显著的燃油经济性。在生产或接近生产的车辆中可以找到几个例子，其实施基于火花点火(SI)发动机与皮带起动器/交流发电机(BSA)或集成起动器/交流发电机(ISA)的耦合。成功开发起动机/交流发电机混合动力汽车的众多挑战之一是实现发动机启动和停止操作，并将乘客的不适感降至最低。这需要控制电机快速平稳地启动和停止发动机，而不会影响车辆的噪音、振动和刺激性。对于柴油混合动力车，这个问题变得更加关键，因为峰值压缩扭矩比SI发动机大得多。本文记录了一项研究活动的结果，该活动侧重于控制带带起动器/交流发电机的混合动力汽车的起停动力学。这项工作是在一台生产1.9kW L共轨柴油机和一台10.6kW永磁电机的基础上进行的。该系统是串/并联混合动力汽车动力总成的一部分，旨在适应中型运动型多功能车原型。进行了初步的实验研究，以评估这一概念的可行性，并对该系统进行了部分表征。这有助于设计面向控制的系统动力学非线性模型，并在完整的混合动力汽车硬件上进行验证。然后应用基于模型的控制技术设计了皮带起动机/交流发电机的控制器，以确保发动机快速平稳地启动。最终的控制设计已经在车辆上实现。研究结果表明，BSA能有效地快速启动柴油机，且振动和噪声非常小。
The starter/alternator technology is considered an easily realizable hybrid electric vehicle (HEV) configuration to achieve significant fuel economy without compromising consumer acceptability. Several examples can be found in production or near-production vehicles, with implementation based on a spark ignition (SI) engine coupled with either a belted starter/alternator (BSA) or an integrated starter/alternator (ISA). One of the many challenges in successfully developing a starter/alternator HEV is to achieve engine start and stop operations with minimum passenger discomfort. This requires control of the electric motor to start and stop the engine quickly and smoothly, without compromising the vehicle noise, vibration, and harshness signature. The issue becomes more critical in the case of diesel hybrids, as the peak compression torque is much larger than in SI engines. This paper documents the results of a research activity focused on the control of the start and stop dynamics of a HEV with a belted starter/alternator. The work was conducted on a production 1.9 l common-rail diesel engine coupled to a 10.6 kW permanent magnet motor. The system is part of a series/parallel HEV powertrain, designed to fit a midsize prototype sport utility vehicle. A preliminary experimental investigation was done to assess the feasibility of the concept and to partially characterize the system. This facilitated the design of a control-oriented nonlinear model of the system dynamics and its validation on the complete HEV hardware. Model-based control techniques were then applied to design a controller for the belted starter/alternator, ensuring quick and smooth engine start operations. The final control design has been implemented on the vehicle. The research outcomes demonstrated that the BSA is effective in starting the diesel engine quickly and with very limited vibration and noise.