HYBRID VEHICLE AND CONTROL METHOD FOR HYBRID VEHICLE

• Main Authors: SUGAI MASAYA, KATO SHUNYA, ISHIKAWA NAOKI, MATSUBARA TOORU, ANDO IKUO, KATSUMATA MUNEHIRO
• Format: Patent
• Language: English; Korean
• Published: 18.09.2017
• 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; CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT; TRANSPORTING; VEHICLES IN GENERAL

Electronic control units (24, 52, 70) set a drivability target engine rotation number (Netagf). Based on the drivability target engine rotation number (Netagf), an upper limit engine power (Pelim) is set and an upper limit driving force (Tdlim) is set by dividing the upper limit engine power (Pelim) by a rotation number (Nd) of a drive shaft (36). In addition, the electronic control units (24, 52, 70) compare accelerator request driving force (Tda) and the upper limit driving force (Tdlim) and set a target engine power (Pe*) to output a smaller value between accelerator request driving force (Tda) and the upper limit driving force (Tdlim) in the drive shaft (36). Moreover, an engine (22), a first motor (MG1), and a second motor (MG2) are controlled such that the target engine power (Pe*) is outputted from the engine (22) and a hybrid vehicle can be driven. As such, a preferable driving feel can be realized by a driver. 전자 제어 유닛(24, 52, 70)은, 드라이버빌리티 목표 엔진 회전수(Netagf)를 설정하고, 드라이버빌리티 목표 엔진 회전수(Netagf)에 기초하여 상한 엔진 파워(Pelim)를 설정함과 함께 상한 엔진 파워(Pelim)를 구동축(36)의 회전수(Nd)로 나누어서 상한 구동력(Tdlim)을 설정한다. 그리고, 상기 전자 제어 유닛(24, 52, 70)은, 액셀러레이터 요구 구동력(Tda)과 상기 상한 구동력(Tdlim)을 비교해서, 작은 쪽이 구동축(36)에 출력되도록 목표 엔진 파워(Pe*)를 설정하고, 목표 엔진 파워(Pe*)가 엔진(22)으로부터 출력되어 주행하도록 엔진(22)과 제1 모터(MG1)와 제2 모터(MG2)를 제어한다. 이에 의해, 운전자에 의해 양호한 운전 감각을 줄 수 있다.