串聯式液壓混合動力車(SHHV)為新時代的節能車款，使用液靜壓迴路取代機械傳動系統驅動車體，可使引擎工作於高效率區間，亦可於煞車過程中回收車體之動能。本文以3.5噸之小貨車為背景，分析將其改裝為串聯式液壓混合動力車所需之液壓迴路架構；為提升煞車過程中之能量回收效益並兼顧行駛安全，本文亦提出針對串聯式液壓混合動力車專用之液壓防鎖死煞車系統設計概念。透過選取適當之液壓元件規格並分析其數學模型，建立不同行駛模式下完整之液靜壓迴路整體數學模型；最後，整合所建立之數學模型及液壓防鎖死剎車系統，評估串聯式液壓混合動力車之節能效益。由軟體模擬結果可知，串聯式液壓動力車相較於傳統車輛約可節省40~50%之油耗；加入液壓防鎖死煞車系統後，於煞車過程中約可回收60~80%之煞車動能。

As an energy saving vehicles of new era, Series Hydraulic Hybrid Vehicles(SHHV) use hydrostatic circuit to replace tradition mechanical transmission, which allowed engine work in high efficiency region and recover vehicle’s kinetic energy during braking. In this article, 3.5 tons of small truck is used as background to analysis the hydraulic circuit structure of SHHV. To raise the energy saving efficiency during braking and driving safety, a new hydraulic anti-lock braking system design concept for SHHV will be proposed in this article. By selecting the appropriate specification of hydraulic components and analyzing the mathematical model of hydraulic components, complete hydrostatic mathematic model of SHHV in different driving mode is established. Finally, with the integration of mathematical model of SHHV and hydraulic anti-lock brake system, the energy saving efficiency of SHHV will be discussed. From the simulation results, the fuel consumption of SHHV is about 40 to 50 percent less than traditional vehicle, and about 60 to 80 percent of kinetic energy recovered during braking with hydraulic anti-lock brake system added.

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