uniflowadj.

Brit.

/ˈjuːnɪfləʊ/, U.S.

/ˈjunəˌfloʊ/

Forms: Also una- (now rare).

Etymology: < uni- comb. form 2 + flow n.¹

Involving flow in one direction only; spec. applied to: (a) a type of reciprocating steam engine in which the steam in the cylinder flows in one direction from inlet(s) to outlet; (b) scavenging in an internal-combustion engine in which there is a similar flow of waste gases in the cylinder. Also elliptical, a uniflow steam engine.

ΘΚΠ

society > occupation and work > equipment > machine > machines which impart power > engine > steam engine > [adjective] > specific types

atmospheric1822

single-acting1825

wind-logged1829

non-condensing1839

double-acting1842

treble-cylinder1877

quadruplex1880

uniflow1912

society > occupation and work > equipment > machine > machines which impart power > engine > internal-combustion engine > [adjective] > removing deposits

scavenging1894

scavenge1912

uniflow1949

society > occupation and work > equipment > machine > machines which impart power > engine > steam engine > [noun] > types of

fire waterwork1663

steam-wheel1797

Cornish engine1840

beam-engine1844

machine-whim1848

screw engine1852

donkey-engine1858

quadruple expansion1861

tandem engine1878

uniflow1971

1912 tr. J. Stumpf's Una-Flow Steam-Engine i. 1 Unaflow engines..may be made with a single expansion stage.

1913 G. F. Gebhardt Steam Power Plant Engin. (ed. 4) ix. 379 A 20 × 30, 200 horse-power Nordberg uniflow engine using very wet steam.

1942 L. B. Chapman Marine Power Plan (ed. 2) v. 127 The unaflow engine has been widely used for stationary work in both Europe and the United States.

1949 C. W. Chapman Mod. High-speed Oil Engines I. xi. 95 There are three main systems employed: cross scavenging, loop scavenging and uniflow scavenging.

1963 H. W. Dickinson Short Hist. Steam Engine (ed. 2) viii. 156 The uniflow engine is a gallant attempt on the part of the reciprocating engine-makers to hold the field against the advance of the turbo-alternator and the electrical drive.

1963 R. R. A. Higham Handbk. Papermaking vii. 184 Contraflow vat. This vat is similar in construction to the uniflow type.

1971 G. Watkins Textile Mill Engine II. 74 The gearing of the waterwheel was destroyed by grit in a flood, and the uniflow then drove the whole until the mill was closed.

1981 Burghardt & Kingsley Marine Diesels iv. 62 Figure 4–8(d), illustrating an opposed piston engine, is another method of uniflow scavenging.

This entry has not yet been fully updated (first published 1986; most recently modified version published online March 2022).

单词	uniflow
释义	uniflowadj. Brit. /ˈjuːnɪfləʊ/, U.S. /ˈjunəˌfloʊ/ Forms: Also una- (now rare). Etymology: < uni- comb. form 2 + flow n.¹ Involving flow in one direction only; spec. applied to: (a) a type of reciprocating steam engine in which the steam in the cylinder flows in one direction from inlet(s) to outlet; (b) scavenging in an internal-combustion engine in which there is a similar flow of waste gases in the cylinder. Also elliptical, a uniflow steam engine. ΘΚΠ society > occupation and work > equipment > machine > machines which impart power > engine > steam engine > [adjective] > specific types atmospheric1822 single-acting1825 wind-logged1829 non-condensing1839 double-acting1842 treble-cylinder1877 quadruplex1880 uniflow1912 society > occupation and work > equipment > machine > machines which impart power > engine > internal-combustion engine > [adjective] > removing deposits scavenging1894 scavenge1912 uniflow1949 society > occupation and work > equipment > machine > machines which impart power > engine > steam engine > [noun] > types of fire waterwork1663 steam-wheel1797 Cornish engine1840 beam-engine1844 machine-whim1848 screw engine1852 donkey-engine1858 quadruple expansion1861 tandem engine1878 uniflow1971 1912 tr. J. Stumpf's Una-Flow Steam-Engine i. 1 Unaflow engines..may be made with a single expansion stage. 1913 G. F. Gebhardt Steam Power Plant Engin. (ed. 4) ix. 379 A 20 × 30, 200 horse-power Nordberg uniflow engine using very wet steam. 1942 L. B. Chapman Marine Power Plan (ed. 2) v. 127 The unaflow engine has been widely used for stationary work in both Europe and the United States. 1949 C. W. Chapman Mod. High-speed Oil Engines I. xi. 95 There are three main systems employed: cross scavenging, loop scavenging and uniflow scavenging. 1963 H. W. Dickinson Short Hist. Steam Engine (ed. 2) viii. 156 The uniflow engine is a gallant attempt on the part of the reciprocating engine-makers to hold the field against the advance of the turbo-alternator and the electrical drive. 1963 R. R. A. Higham Handbk. Papermaking vii. 184 Contraflow vat. This vat is similar in construction to the uniflow type. 1971 G. Watkins Textile Mill Engine II. 74 The gearing of the waterwheel was destroyed by grit in a flood, and the uniflow then drove the whole until the mill was closed. 1981 Burghardt & Kingsley Marine Diesels iv. 62 Figure 4–8(d), illustrating an opposed piston engine, is another method of uniflow scavenging. This entry has not yet been fully updated (first published 1986; most recently modified version published online March 2022). < adj.1912
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