ENGINE SYSTEM AND SADDLE-RIDING TYPE VEHICLE

• Main Authors: MAEHASHI KOSEI, NISHIMURA TETSUHIKO, KAJIWARA KENICHI, HORAGUCHI YOICHI
• Format: Patent
• Language: English; Japanese
• Published: 21.07.2016
• Subjects: BLASTING; COMBUSTION ENGINES; CONTROLLING COMBUSTION ENGINES; CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES; ENGINE PLANTS IN GENERAL; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; WEAPONS

PROBLEM TO BE SOLVED: To provide an engine system in which occurrence of abnormal noise by a decompression mechanism is prevented, and a saddle-riding type vehicle equipped with the same.SOLUTION: A decompression mechanism DE includes a centrifugal member 51, a driving member 52 and a bias member 53. In starting of an engine 10, when a rotation speed of a crankshaft 13 is lower than a switching speed, the centrifugal member 51 is kept at a low speed position by biasing force of the bias member 53. When the rotation speed of the crankshaft 13 becomes higher than the switching speed, the centrifugal member 51 is kept at a high speed position by centrifugal force. In an idling stop period, when the rotation speed of the crankshaft 13 becomes equal to or lower than a brake start speed that is higher than the switching speed, a rotary electric machine 30 is controlled such that the crankshaft 13 is braked. The centrifugal member 51 is kept at the low speed position or the high speed position by inertia force generated in braking of the crankshaft 13.SELECTED DRAWING: Figure 13 【課題】デコンプ機構による異音の発生が防止されたエンジンシステムおよびそれを備えた鞍乗り型車両を提供する。【解決手段】デコンプ機構ＤＥは、遠心部材５１、駆動部材５２および付勢部材５３を含む。エンジン１０の始動時において、クランク軸１３の回転速度が切替速度より低いときには、遠心部材５１が付勢部材５３の付勢力によって低速位置に保持される。クランク軸１３の回転速度が切替速度より高くなると、遠心力によって遠心部材５１が高速位置に保持される。アイドリングストップ期間において、クランク軸１３の回転速度が切替速度より高い制動開始速度以下になると、クランク軸１３が制動されるように回転電機３０が制御される。遠心部材５１は、クランク軸１３の制動時に生じる慣性力により低速位置または高速位置に保持される。【選択図】図１３