hot-bulb

hot-bulb

[′hät ‚bəlb]
(mechanical engineering)
Pertaining to an ignition method used in semidiesel engines in which the fuel mixture is ignited in a separate chamber kept above the ignition temperature by the heat of compression.
References in periodicals archive ?
In 1889, to provide more hold space, the hull was extended to 150ft and in 1914 the steam engine was replaced by a Swedish Bolinder four-cylinder hot-bulb semi-diesel, today the largest and oldest of its kind in the world.