Hybrid working vehicle
AssigneeKomatsu Ltd.
InventorsSatoru Nishimura, Hikosaburou Hiraki
Life of this patent
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Abstract
An engine room is divided into a left room and a right room by a cooling unit. An intake chamber is disposed at a left side and an engine and the like are disposed at a right side. A cooling heat sink is provided on a side of the intake chamber, and a storage and a controller for controlling hybrid electronic devices are formed in this order in a cooling heat sink. Further, a cooling pump for supplying cooling liquid to the cooling heat sink is provided in the intake chamber. A radiator for cooling the cooling liquid is provided in front of the cooling unit.
Claims15
A hybrid working vehicle in which an engine is transversely disposed, comprising:
- a power unit including the engine, a generator-motor and a main hydraulic pump, wherein the generator-motor and the main hydraulic pump are disposed in an engine room in which the engine is arranged;
- and
- a storage for storing electric power generated by the generator-motor;
- wherein the power unit is provided between (i) a partition for partitioning a front portion of the hybrid working vehicle and the engine room from each other and (ii) a wall of a counterweight facing the engine room;
- and
- wherein the storage is provided at at least one of:
- (i) a side of the power unit where the engine is arranged, and (ii) a side of the power unit where the main hydraulic pump is arranged, and between the partition and the wall.
A hybrid working vehicle comprising:
- an engine provided to be orthogonal to a main frame along a front-rear direction of the vehicle;
- a generator-motor and a main hydraulic pump provided in an engine room in which the engine is arranged;
- a cooling unit having a cooling device on a hydraulic line including the engine;
- a storage that stores electric power generated by the generator-motor;
- a controller that controls a motor drive of the hybrid working vehicle;
- a radiator that cools the storage and the controller;
- and
- a cooling fan that generates cooling air to blow the cooling unit and the radiator;
- wherein the engine, the generator-motor, and the main hydraulic pump provide a power unit;
- wherein the storage is provided between (i) a partition for partitioning a front portion of the hybrid working vehicle and the engine room from each other and (ii) a wall of a counterweight facing the engine room, and at a side of the power unit where the engine is arranged;
- and
- wherein the storage and the controller, the radiator, the cooling unit, the cooling fan, the engine, the generator-motor, and the main hydraulic pump are sequentially arranged, the storage and the controller being arranged furthest upstream and the main hydraulic pump being arranged furthest downstream with respect to a flow direction of the cooling air.
Dependencies are inferred from the claim text.