prechambern.

Brit.

/ˈpriːˌtʃeɪmbə/, U.S.

/ˈpriˌtʃeɪmbər/

Origin: Formed within English, by clipping or shortening. Etymon: English pre-combustion chamber.

Etymology: Short for pre-combustion chamber (see e.g. quot. 1923 at pre-combustion n.) < pre-combustion n. + chamber n.

In some diesel engines: a small chamber near the cylinder head in which a portion of fuel-air mixture can be compressed and heated to facilitate or initiate combustion. Cf. pre-combustion n.

ΘΚΠ

society > occupation and work > equipment > machine > machines which impart power > engine > internal-combustion engine > [noun] > diesel > parts of

hot bulb1907

prechamber1934

1934 C. S. Moore & J. H. Collins Effect Combustion-chamber Shape on Performance Prechamber Compression-ignition Engine (NACA Techn. Rep. No. 514) 1 The effect on engine performance of variations in the shape of the prechamber, the shape and direction of the connecting passage,..[etc.] was investigated using a 5 by 7 inch single-cylinder compression-ignition engine.

1968 Proc. Royal Soc. A. 307 189 The production of blue smoke due to misfiring at high speed is a feature of high-swirl, pre-chamber diesel engines.

1990 AutoWeek (Nexis) 12 Mar. 27 Mercedes civilized this most undiesel-like diesel with a variety of refinements ranging from simple sound insulation around the engine bay to a revised prechamber for more efficient combustion.

2003 Power (Nexis) June 24 After a rich mixture of air and fuel is fed into the prechamber, it is ignited by a high-energy spark.

This is a new entry (OED Third Edition, March 2007; most recently modified version published online March 2022).

单词	prechamber
释义	prechambern. Brit. /ˈpriːˌtʃeɪmbə/, U.S. /ˈpriˌtʃeɪmbər/ Origin: Formed within English, by clipping or shortening. Etymon: English pre-combustion chamber. Etymology: Short for pre-combustion chamber (see e.g. quot. 1923 at pre-combustion n.) < pre-combustion n. + chamber n. In some diesel engines: a small chamber near the cylinder head in which a portion of fuel-air mixture can be compressed and heated to facilitate or initiate combustion. Cf. pre-combustion n. ΘΚΠ society > occupation and work > equipment > machine > machines which impart power > engine > internal-combustion engine > [noun] > diesel > parts of hot bulb1907 prechamber1934 1934 C. S. Moore & J. H. Collins Effect Combustion-chamber Shape on Performance Prechamber Compression-ignition Engine (NACA Techn. Rep. No. 514) 1 The effect on engine performance of variations in the shape of the prechamber, the shape and direction of the connecting passage,..[etc.] was investigated using a 5 by 7 inch single-cylinder compression-ignition engine. 1968 Proc. Royal Soc. A. 307 189 The production of blue smoke due to misfiring at high speed is a feature of high-swirl, pre-chamber diesel engines. 1990 AutoWeek (Nexis) 12 Mar. 27 Mercedes civilized this most undiesel-like diesel with a variety of refinements ranging from simple sound insulation around the engine bay to a revised prechamber for more efficient combustion. 2003 Power (Nexis) June 24 After a rich mixture of air and fuel is fed into the prechamber, it is ignited by a high-energy spark. This is a new entry (OED Third Edition, March 2007; most recently modified version published online March 2022). < n.1934
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