46 results about "Hybrid electric bus" patented technology

The invention discloses a hybrid electric bus energy management method based on a random operation condition model. The method comprises the following implementation steps of: 1) obtaining a historical speed-displacement relationship and an acceleration-displacement relationship according to the historical speed of the bus, obtaining the historical average speed and average acceleration on each displacement point on the running path, and obtaining a speed random factor of the bus on each displacement point according to the variance of the historical speed; 2) obtaining the power need within a certain prediction displacement section after the current displacement point, obtaining a historical motor power change range within the certain prediction displacement section after the current displacement point of the bus, and obtaining a power distribution ratio range of the current displacement point; and 3) obtaining the optimal distribution ratio of hybrid power, and controlling the output states of an engine and a motor according to the optimal distribution ratio. The method disclosed by the invention has the advantages of reasonable energy distribution, good fuel economy, little exhaust emission, good robustness, energy conservation and environmental friendliness.

The invention discloses a radiator assembly for a hybrid electric bus. The radiator assembly comprises a motor and controller cooling radiator, an engine cooling radiator, a supercharging intercooler and a cooling fan, wherein the motor and controller cooling radiator and the engine cooling radiator are connected in the same row; the supercharging intercooler is arranged outside the motor and controller cooling radiator and the engine cooling radiator; the engine cooling radiator is close to a hot end of the supercharging intercooler; the motor and controller cooling radiator is close to a cold end of the supercharging intercooler; and the cooling fan is arranged inside the motor and controller cooling radiator and the engine cooling radiator. Since the circulating water passages of the two radiators are independent of each other, the cooling effects of an engine and a motor and controller cooling system are enhanced, and the work and the life of the radiator assembly are guaranteed; and thus, the problem of arrangement of the radiator assembly in an engine driving cabin of the hybrid electric bus is solved.

The invention discloses a regional control method for bus stops of hybrid buses based on intelligent traffic information. The method comprises the steps of: step 1, collecting the speed, the throttleopening, the distance from the next bus station and the battery power information of a bus according to a sampling period; step 2: carrying fuzzification on the speed, the throttle opening, the distance from the next bus station and the battery power information of the bus, and then performing fuzzy inference calculation, defuzzification and obtaining a control permission degree; step 3, when thecontrol permission degree is {low}, allowing the bus to drive according to the original driving state; when the control permission is {medium, high}, disconnecting an engine of the bus from a clutch of a transmission to maintain torqueless transmission between the engine and the transmission and keeping the engine turned off; keeping the transmission running in a low gear position, allow downshifting, prohibiting the upshift; and using a drive motor to drive the bus separately and limiting the output power thereof. Accordingly, the comprehensive energy consumption and the service life of the clutch are improved.

The present application discloses a wheel beam type axleless vehicle frame that comprises five sections in sequence from front to back, including a front hanging rack, a front wheel carrier, an intermediate coupling rack, a rear wheel carrier, and a rear hanging rack. Every two adjacent sections amongst the five sections are manufactured and connected in a unified and standardized integrated mode; a modular combination structure is used; and the five sections, which are independent respectively, may be assembled and adjusted according to requirements, and have sufficient strength and stiffness as well as completely independent interchangeability. The vehicle frame has the advantages that match with the needs of an electric vehicle, and thus may be used as the optimum configuration frame for the electric vehicle; and the vehicle frame may be improved according to requirements to be applicable to various fuel and hybrid electric passenger vehicles and commercial vehicles.

The invention relates to a hybrid power bus tail end structure. The hybrid power bus tail end structure comprises a hybrid power nine-piece beam, an engine compartment framework assembly installed above the hybrid power nine-piece beam, an engine left tail longitudinal beam assembly, an engine right tail longitudinal beam assembly, a heat release module installation support arranged on the left side of the engine left tail longitudinal beam assembly, a plurality of post-treatment system installation supports arranged on the right side of the engine right tail longitudinal beam assembly, a first connection support connecting the engine compartment framework assembly with the heat release module installation support, and a second connection support used for connecting the engine right tail longitudinal beam assembly with part of the post-treatment system installation supports. The engine left tail longitudinal beam assembly and the engine right tail longitudinal beam assembly are arranged on the left side and the right side of the middle segment of the hybrid power nine-piece beam symmetrically. The defects in the prior art can be overcome through the hybrid power bus tail end structure. The hybrid power bus tail end structure is suitable for hybrid power buses of various lengths and high in universality, and has the characteristics of being small in overall weight, high in strength, high in safety and the like.

The invention discloses a plug-in hybrid electric bus electromechanical coupling system which comprises an auxiliary power system region, an energy source region, a transmission system region and a control and signal region. On the basis of the characteristic that a series-parallel plug-in hybrid electromechanical coupling system integrates series hybrid power and parallel hybrid power, the plug-in hybrid electric bus electromechanical coupling system disclosed by the invention can ensure both an engine and a driving motor to work in a high efficiency region under any condition, has wider application range and has the advantages of fulfilling the aims of improving the reliability of a finished automobile and reducing the energy consumption by the high integration and integrated control of the system and meeting the requirement on the mass production.