HYBRID VEHICLE

• Main Author: KIMURA MASAYASU
• Format: Patent
• Language: English; Japanese
• Published: 16.02.2023
• 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; BLASTING; COMBUSTION ENGINES; CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; CONTROLLING COMBUSTION ENGINES; CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES; ENGINE PLANTS IN GENERAL; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT; STEAM ENGINES; TRANSPORTING; VEHICLES IN GENERAL; WEAPONS

To satisfy both a demand in a scene where it is desired to raise exhaust gas temperature and a demand in a scene where it is desired to suppress a rise in the exhaust gas temperature.SOLUTION: A vehicle 1 has a variable exhaust valve gear 52 that switches valve lift characteristics of an exhaust valve 26 of an internal combustion engine 10. The variable exhaust valve gear 52 switches cam characteristics between the case in which the internal combustion engine 10 is operated at a first operation point where fuel economy is good and the case in which the internal combustion engine 10 is operated at a second operation point where the internal combustion engine 10 has a high output. At the first operation point, a first cam characteristic for suppressing reduction in exhaust gas temperature is used. At the second operation point, a second cam characteristic for suppressing increase in exhaust temperature is used.SELECTED DRAWING: Figure 1 【課題】排気温度を上昇させたい場面での要求と排気温度の上昇を抑制したい場面での要求とを両立させる【解決手段】車両１は、内燃機関１０の排気弁２６のバルブリフト特性を切り替える排気可変動弁機構５２を有している。排気可変動弁機構５２は、内燃機関１０を燃費の良い第１運転点で運転する場合と内燃機関１０の出力が高い第２運転点で運転する場合とでカム特性を切り替える。第１運転点では、排気温度の低下が抑制される第１カム特性を使用する。第２運転点では、排気温度の上昇が抑制される第２カム特性を使用する。【選択図】図１