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燃气发电机组知识的相关的名词解释

来源:http://www.huannengpower.com   发布于:2019-02-05

(1)工作循环——由进气、压缩、作功和排气四个工作过程组成的封闭循环,只有周而复始地进行这些过程,内燃机才能持续地作功。

(1) Work cycle - a closed cycle consisting of four working processes: intake, compression, work and exhaust. Only when these processes are carried out again and again, can the internal combustion engine work continuously.

(2)上、下止点——活塞顶离曲轴回转中心远处,即活塞高位置,称为上止点;活塞顶离曲轴回转中心近处,即活塞低点,称为下止点。在上、下止点处,活塞的运动速度为零。

(2) Upper and lower dead ends - the farthest distance between the piston top and the crankshaft revolving center, i.e. the highest position of the piston, is called upper dead ends; the nearest place between the piston top and the crankshaft revolving center, i.e. the lowest point of the piston, is called lower dead ends. At the top and bottom dead ends, the piston moves at zero speed.

(3)曲柄半径——曲轴的回转半径R。

(3) Crank radius - crankshaft turning radius R.

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(4)活塞行程——上、下止点间的距离S。S=2R。

(4) Piston stroke - distance S between upper and lower dead ends. S=2R.

(5)气缸工作容积——活塞从上止点到下止点所扫过的容积Vh

(5) Cylinder Volume - Volume Vh swept by piston from top dead-end to bottom dead-end

(6)燃烧室容积——活塞位于上止点时活塞顶面以上与气缸盖底面以下之间形成的容积Vc。

(6) Combustor Volume - Volume Vc formed between the top of the piston and the bottom of the cylinder head when the piston is located at the top dead center.

(7)气缸总容积——气缸工作容积和燃烧室容积之和Va。Va=Vc+Vh。

(7) Total Cylinder Volume - Va of the sum of Cylinder Volume and Combustion Chamber Volume. Va = Vc + Vh.

(8)压缩比——气体压缩前的容积与气体压缩后的容积之比值,即气缸总容积与燃烧室容积之比ε。压缩比是发动机中一个非常重要的概念,它表示了气体的压缩程度。

(8) Compression ratio - the ratio of volume before gas compression to volume after gas compression, i.e. the ratio of total cylinder volume to combustion chamber volume. Compression ratio is a very important concept in engine, which represents the degree of gas compression.

(9)发动机排量——多缸发动机各气缸工作容积的总和VL。VL=Vh×I;其中,Vh—气缸工作容积;I—气缸数目。

(9) Engine displacement - VL of the total working volume of each cylinder of a multi-cylinder engine. VL = Vh * I; where Vh - cylinder working volume; I - cylinder number.


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