US 11,735,978 B2
Free piston generator based on rigid synchronous transmission system
Long Liu, Harbin (CN); Qihao Mei, Harbin (CN); Hao Zhao, Harbin (CN); Zhichun Xu, Harbin (CN); Yuanheng Tang, Harbin (CN); Chen An, Harbin (CN); Xiao Han, Harbin (CN); and Junjie Liu, Harbin (CN)
Assigned to HARBIN ENGINEERING UNIVERSITY, Harbin (CN)
Filed by Harbin Engineering University, Harbin (CN)
Filed on Dec. 29, 2021, as Appl. No. 17/564,656.
Claims priority of application No. 202110272283.5 (CN), filed on Mar. 12, 2021.
Prior Publication US 2022/0123627 A1, Apr. 21, 2022
Int. Cl. H02K 7/18 (2006.01); H02K 5/04 (2006.01); H02K 7/10 (2006.01); H02K 7/116 (2006.01); F02B 71/00 (2006.01); F01B 7/02 (2006.01)
CPC H02K 7/1869 (2013.01) [F01B 7/02 (2013.01); F02B 71/00 (2013.01); H02K 5/04 (2013.01); H02K 7/10 (2013.01); H02K 7/1166 (2013.01); H02K 7/1884 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a first linear generator, a second linear generator, a rigid synchronous transmission assembly, two first cylinders, and two second cylinders;
wherein each of the first linear generator and the second linear generator comprises a shell, a rotor mandrel movable through the shell, a stator coil fixed to the shell and coaxially sleeving the rotor mandrel, and a generator rotor;
wherein the generator rotor has a magnet, is coaxially fixed to the rotor mandrel and is between the stator coil and the rotor mandrel;
wherein the rotor mandrel of the first linear generator and the rotor mandrel of the second linear generator are connected through the rigid synchronous transmission assembly;
wherein each of the first cylinders comprises a first cylinder block and a first piston;
wherein the first cylinder block comprises a fuel injector, a first inlet valve, and a first exhaust valve;
wherein the first pistons are fixedly connected to two ends of the rotor mandrel of the first linear generator, respectively;
wherein each of the second cylinders comprises a second cylinder block and a second piston;
wherein the second cylinder block comprises a second inlet valve, a second exhaust valve, an inlet port, and an outlet valve;
wherein the second pistons are fixedly connected to two ends of the rotor mandrel of the second linear generator, respectively;
wherein the apparatus further comprises a first intercooler fluidly connected to the first inlet valve of one of the first cylinders and the outlet valve of one of the second cylinders and a second intercooler fluidly connected to the first inlet valve of the other of the first cylinders and the outlet valve of the other of the second cylinders; and
wherein the apparatus further comprises a first cross-over channel fluidly connected to the first exhaust valve of one of the first cylinders and the inlet port of one of the second cylinders and a second cross-over channel fluidly connected to the first exhaust valve of the other of the first cylinders and the inlet port of the other of the second cylinders.