摘要:
A flexible energy management system is disclosed, which can be applied to trains having a wide variety of formations. The invention uses a special recycling vehicle incorporating regenerative braking and energy storage such as a battery, together with a power conversion system to supply electricity in the standard form for train services such as lighting and air conditioning. A control system arranges the supply of electricity for train services to coaches from either the recycling vehicle or the locomotive depending on the level of charge in the battery. This improves the overall energy efficiency of the train without requiring special electrical bus connections between vehicles. Further embodiments of the system include facilities for boost traction and shunting, with arrangements for the automatic control of power distribution when train formations are changed, as illustrated in Figure 5 .
摘要:
In a vehicle capable of performing regenerative braking and fluid pressure braking, in changing from the regenerative braking to the fluid pressure braking in response to a decrease of a vehicle speed due to braking, a fluid pressure braking force is increased from 0 at a first increasing rate when the vehicle speed falls to or below a first threshold value (V1), and the fluid pressure braking force is increased at a second increasing rate, which is higher than the first increasing rate, when the vehicle speed falls to or below a second threshold value (V2), which is smaller than the first threshold value (V1). With this configuration, while occurrence of a squeal noise of a wheel cylinder can be prevented by setting the first increasing rate of the fluid pressure braking force at a small value, a required braking force can be generated without any problem by setting the second increasing rate, to be used subsequently thereto, of the fluid pressure braking force at a large value.
摘要:
At a time (t3) when a vehicle speed is decreased below a switching-start vehicle speed and the switching from regenerative braking to fluid pressure braking is performed, even if a slave cylinder is caused to be operated by driving an electric motor at the same time of starting the reduction of regenerative braking force, the increase of fluid pressure braking force is delayed by an ineffective stroke in the slave cylinder. Accordingly, a temporary drop of total braking force of the regenerative braking force and fluid pressure braking force is generated. However, at a time (t2) when a vehicle speed is decreased below a switching-preparation-start vehicle speed, the electric motor is, beforehand, caused to drive slightly to cancel out the ineffective stroke in the slave cylinder. This can prevent a temporary drop of the total braking force of the regenerative braking force and fluid pressure braking force at the time of the switching, and can thereby prevent deterioration of brake feeling.
摘要:
The invention relates to a method for operating a hybrid drive, wherein at least two power units (10, 12) work together in a driving manner and one energy accumulator is at least intermittently charged by one of the power units (12) one of the power units (12) is at least intermittently supplied with drive energy by the energy accumulator. The power unit (12) produces a desired power (Pelsoll). According to the invention, required desired-drive torque (Msoll) of the drive is produced and, simultaneously, the desired power (Pelsoll) of the engine (12) is maintained at the temporal mean. Deviations of the desired power (Pelsoll) are permitted in accordance with current operating points of the power unit (10, 12). This enables fuel consumption to be optimised.
摘要:
Hybrid vehicle comprising at least one electrical machine, one or more brake systems and a control system, which vehicle comprises an activation unit adapted to generating an activation signal which is arranged to activate the control system to calculate the retardation a*(t) required for bringing the vehicle to a halt solely by means of the brake torque which the electrical machine can provide. The retardation is calculated by means of a set of retardation parameters comprising at least one from among current vehicle speed, maximum and minimum limits for the retardation, and maximum brake torque for the electrical machine or machines, and the control system is further adapted to calculating a brake force F* tr which is the brake force effecting the retardation a*(t), and to generating one or more brake signals based on F* tr to the electrical machine or machines for braking of the vehicle to a halt.
摘要:
La présente invention concerne un dispositif de transmission à variation de vitesse pour groupe motopropulseur de véhicule automobile comportant un train épicycloïdal (26) avec un planétaire (36) et une couronne (50) reliés à l'arbre (12) du moteur thermique (10) dudit véhicule ainsi qu'un porte-satellites (58) relié par une voie de transmission de mouvement (102) à l'essieu moteur (16) de ce véhicule. Selon l'invention, le planétaire (36) et la couronne (50) sont reliés chacun à l'arbre (12) du moteur par un accouplement à commande contrôlée (28,30) et à une partie fixe (48a,48b) du groupe motopropulseur du véhicule par un accouplement unidirectionnel (32,34).
摘要:
The invention relates to a method for operating a hybrid drive device (1) of a motor vehicle, comprising at least two different drive systems (6,7), in particular an electric engine (8) and an internal combustion engine (9), that can be connected to at least two drive trains (15, 16) of the motor vehicle. In the process, when one of the drive systems (6, 7) is switched, in particular from a first to a second of the drive trains (15, 16) or from the second to the first drive train (16, 15), and/or during a synchronization, a replacement torque substantially corresponding to the torque produced by the one drive system (6, 7) is provided by at least partially closing a coupling (21, 22) of another of the drive systems (7, 6). The invention further relates to a hybrid drive device (1) and an electronic controller.
摘要:
A hybrid vehicle and a method for operating a hybrid vehicle are provided, the vehicle including at least a first drive unit and a second drive unit coupled to the first drive unit, wherein the second driving unit recovers kinetic energy during braking the hybrid vehicle, a transmission unit which can be coupled to the first and/or second drive unit and a drive axle. It is proposed to change the transmission ratio of the transmission unit depending on a desired amount of energy recovered by the second drive unit during regenerative braking or a predetermined time period before the anticipated start of regenerative braking.
摘要:
Regenerative braking method for a motor vehicle, characterized in that the regenerative braking action is applied progressively, the rate of application of the braking action being dependent on the speed of the motor vehicle.