Hybrid wheel loader
First Claim
Patent Images
1. A hybrid wheel loader comprising:
- a front work machine provided at the front of a vehicle;
power sources including an engine, a motor/generator and an electric storage device; and
s hybrid control device which controls outputs of the power sources;
characterized in that;
a capacitor is provided as the electric storage device;
the hybrid control device makes control to decrease a voltage of the capacitor in accordance with increase of energy held by the vehicle; and
the energy held by the vehicle consists of kinetic energy based on a traveling speed of a vehicle body, or energy obtained by adding at least one of potential energy based on height of a bucket of the front work machine and rotational energy based on rotation speeds of the engine and the motor/generator to the kinetic energy.
3 Assignments
0 Petitions
Accused Products
Abstract
[Problem] To provide a hybrid wheel loader capable of highly efficient and stable supply of motive power.
[Solution] A hybrid wheel loader including: a front work machine (5) provided at the front of a vehicle; power sources including an engine (1) and an electric storage device; and a hybrid control device (20) which controls output of these power sources; characterized in that: a capacitor (11) is provided as the electric storage device; and the hybrid control device makes control to decrease a voltage of the capacitor in accordance with increase of energy held by the vehicle.
10 Citations
7 Claims
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1. A hybrid wheel loader comprising:
- a front work machine provided at the front of a vehicle;
power sources including an engine, a motor/generator and an electric storage device; and
s hybrid control device which controls outputs of the power sources;
characterized in that;a capacitor is provided as the electric storage device; the hybrid control device makes control to decrease a voltage of the capacitor in accordance with increase of energy held by the vehicle; and the energy held by the vehicle consists of kinetic energy based on a traveling speed of a vehicle body, or energy obtained by adding at least one of potential energy based on height of a bucket of the front work machine and rotational energy based on rotation speeds of the engine and the motor/generator to the kinetic energy. - View Dependent Claims (2, 3, 4)
- a front work machine provided at the front of a vehicle;
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5. A hybrid wheel loader comprising:
- a front work machine provided at the front of a vehicle;
power sources including an engine, a motor/generator and an electric storage device; and
a hybrid control device which controls outputs of the power sources;
characterized in that;a capacitor is provided as the electric storage device; the hybrid control device makes control to decrease a voltage of the capacitor in accordance with the increase of energy held by the vehicle; and the hybrid control device makes control to obtain different characteristics in the voltage of the capacitor relative to the energy held by the vehicle between a normal operation mode in which normal work operation is carried out and a vehicle standby mode in which the vehicle is kept standby. - View Dependent Claims (6, 7)
- a front work machine provided at the front of a vehicle;
Specification