Auxiliary power unit and method for a vehicle
US12377707B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 27, 2024 |
| Grant date | Aug 5, 2025 |
| Priority date | — |
| Expiry date | Feb 27, 2044 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D27/00
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An auxiliary power unit for a vehicle is configured to provide cool or heated air within the vehicle with the main engine off. The auxiliary power unit includes an auxiliary diesel engine that receives fuel from the fuel tank of the vehicle. The auxiliary diesel engine is connected to a hydraulic pump of a hydraulic power system by a first magnetic clutch to provide mechanical power. The hydraulic pump converts the mechanical power to hydraulic power. The hydraulic power system delivers the hydraulic power to a hydraulic compressor drive motor that converts it back to mechanical power. The hydraulic power system is connected to a compressor drive via a second magnetic clutch. The compressor drive provides power to an air conditioner (AC) compressor of the vehicle such that the AC compressor activates while the auxiliary power unit is operating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.