Matching method and device for front drive system and rear drive system of four-wheel drive hybrid power automobile

• Main Authors: LIU YUAN, YE ZHIGANG, XU YANGHUI, WANG LIZHOU
• Format: Patent
• Language: Chinese; English
• Published: 18.05.2016
• Subjects: ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES; ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; PERFORMING OPERATIONS; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING; VEHICLES IN GENERAL

The invention provides a matching method and device for a front drive system and a rear drive system of a four-wheel drive hybrid power automobile. The method includes the steps that firstly, according to the acquired main reduction ratio of a gearbox and the acquired reduction ratio of each gear, the engine excitation frequency generated when the gearbox works at each gear is obtained through calculation; secondly, according to the obtained rear subtraction reduction ratio range of the rear drive system, the corresponding motor excitation frequency is calculated, and the motor excitation frequency range is obtained; and thirdly, whether the motor excitation frequency meeting the condition that the absolute value of the difference value of the motor excitation frequency and the engine excitation frequency is larger than or equal to a threshold value exists in the motor excitation frequency range or not is judged, and if yes, the rear subtraction reduction ratio corresponding to the motor excitation frequency