1. A utility vehicle comprising:
a cargo;
an engine disposed under the cargo, the engine including a fore-and-aft crankshaft;
a lateral axle disposed under the cargo;
a hydrostatic transmission disposed under the cargo so as to transmit power from the engine to the axle; and
a mechanical transmission disposed under the cargo so as to transmit power from the engine to the axle, wherein the mechanical transmission includes a transmission shaft disposed in parallel to the axle, and wherein the hydrostatic transmission and the mechanical transmission are laterally juxtaposed.
2. The utility vehicle according to claim 1, wherein power of the engine is distributed between the hydrostatic transmission and the mechanical transmission.
3. The utility vehicle according to claim 1, further comprising:
a PTO drive train branching from a power train from the engine on the downstream side of both the hydrostatic transmission and the mechanical transmission.
4. The utility vehicle according to claim 3, wherein power of the engine is distributed between the hydrostatic transmission and the mechanical transmission.
5. The utility vehicle according to claim 1, further comprising:
a PTO shaft disposed in parallel to the crankshaft of the engine; and
a drive train to the PTO shaft, wherein the drive train branches from a power train from the engine on the upstream side of both the hydrostatic transmission and the mechanical transmission.
6. The utility vehicle according to claim 5, wherein power of the engine is distributed between the hydrostatic transmission and the mechanical transmission.
7. The utility vehicle according to claim 5, further comprising:
a PTO drive train branching from a power train from the engine on the downstream side of both the hydrostatic transmission and the mechanical transmission.
8. The utility vehicle according to claim 7, wherein power of the engine is distributed between the hydrostatic transmission and the mechanical transmission.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A simulating method of manufacturing flow which is applied in a semiconductor foundry, the simulating method comprising:
building a plurality of operational blocks in accordance with operational data of each manufacturing equipment;
integrating the operational blocks and building at least one operational library;
building a plurality of strategic blocks in accordance with throughput data of each manufacturing equipment;
integrating the strategic blocks and building at least one strategic library;
collecting data from the operational library and strategic library and building a operational model; and
performing manufacturing flow simulation in accordance with the operational model.
2. The method of claim 1 wherein the manufacturing equipments include process equipments, transferring equipments, material delivering equipments and material storage equipments.
3. The method of claim 1 wherein the operational equipments include etching equipments, exposure equipments, rail guided vehicles (RGV) and stockers.
4. The method of claim 1 wherein the operational data comprises each hardware specification data, operational data, and user demand specification data of the manufacturing equipments.
5. The method of claim 1 wherein the throughput data comprises each manufacturing flow data, operational procedure data, and material transfer flow data of the manufacturing equipments.
6. The method of claim 1 wherein when the operational model is built, a 12-inch wafer foundry model is established.
7. The method of claim 1 wherein when the operational model is built, a section manufacturing line is established.
8. An operational model simulation of a 12-inch wafer foundry built in accordance with the method of claim 1.
9. An operational model simulating the manufacturing flow of a semiconductor foundry, the operational model comprising:
an operational library including a plurality of operational blocks built in accordance with each operational data of each manufacturing equipment; and
a strategic library including a plurality of strategic blocks built in accordance with each throughout data of each manufacturing equipment.
10. The model of claim 9 wherein the manufacturing equipments include process equipments, material transfer equipments and material storage equipments.
11. The model of claim 9 wherein the process equipments include etching equipments, exposure equipments, rail guided vehicles (RGV) and stockers.
12. The model of claim 9 wherein the operational data comprises each hardware specification data, operational specification data, and user demand specification data of the manufacturing equipments.
13. The model of claim 9 wherein the throughput data comprises each manufacturing flow data, operational procedure data, and material transfer flow data of the manufacturing equipments.
14. The model of claim 9 wherein the operational model is a complete 12-inch wafer foundry model.
15. The model of claim 9 wherein operational model is a section manufacturing line model.