公开(公告)号：US20180238265A1

公开(公告)日：2018-08-23

申请号：US15751557

申请日：2016-02-19

Applicant: Barry W. JOHNSTON

Inventor： Barry W. JOHNSTON

IPC: F02G1/044 ,  F01K25/10 ,  F02G1/053 ,  F16J15/52

CPC classification number: F02G1/044 ,  F01K25/10 ,  F02G1/043 ,  F02G1/0535 ,  F02G2270/40 ,  F02G2280/50 ,  F02G2290/00 ,  F16J15/52

Abstract: A near adiabatic engine has four stages in a cycle: (1) a means of adiabatically expanding the working fluid during the downstroke from a high pressure/temperature level to a low level; (2) a means of cooling the working fluid at Bottom Dead Center (BDC); (3) a means of adiabatically compressing that fluid from a low pressure/temperature level at BDC to the higher level at Top Dead Center (TDC); and finally, (4) a means of passing that working fluid back to the high pressure/temperature source in a balanced pressure environment so as to minimize the resistance of that flow. This disclosure teaches the means of achieving (2) and (3) as follows: (2) a means is disclosed of BDC cooling of the expanded working fluid in the working chamber, and (3) a means is disclosed of adiabatically compressing the working fluid into the pump chamber before cycling the fluid.

公开(公告)号：US20200040731A1

公开(公告)日：2020-02-06

申请号：US16492445

申请日：2017-03-10

Applicant: Barry W. JOHNSTON

Inventor： Barry W. JOHNSTON

IPC: F01B29/10 ,  F01K7/36

Abstract: A near-adiabatic engine has four stages in a cycle: a means of near adiabatically expanding the working fluid during the downstroke (expansion stroke); a means of cooling the working fluid at Bottom Dead Center (BDC); a means of near adiabatically compressing that cooled fluid from the lower pressure/temperature level at BDC to the higher level at Top Dead Center (TDC); and finally, a means of passing that working fluid back into the high pressure/temperature source in a balanced condition with minimal resistance to that flow.