The phrase "absence of combustion" is correct and usable in written English.
It can be used in contexts discussing processes, reactions, or conditions where combustion is not occurring, such as in scientific or technical discussions.
Example: "The engine operates efficiently in the absence of combustion, relying instead on electric power."
Alternatives: "lack of combustion" or "non-combustion state".
The main reason for a poor predictive capability of the existing models is the absence of combustion contribution to the blast wave strength.
The turbulent burning velocity is assumed to be equal to the unburnt reactant velocity at the average height of the flame measured using the drum, and this velocity is deduced from measurements with a hot-wire anemometer in the absence of combustion.
The absence of combustion allows MDI to use a lean aluminum engine casing.
In the absence of combustion, such chemistry is often the major source of free radicals and other short-lived reactive species in indoor environments.
Kerosene heater use during the winter months, in the absence of tobacco combustion, results in substantial increases in indoor concentrations of PM2.5, SO42-, and possibly H+, as compared to homes without kerosene heaters.
Because of the absence of tobacco and combustion, e-cigarette vapour is devoid of the carcinogens tobacco contains.
Tesla's crash rating is buoyed by the absence of an internal combustion engine.
Still, the all-electric propulsion system — and the absence of a large internal combustion engine up front — let the designers alter the car's proportions.
In the absence of either mitigation or combustion processes, hydrogen leaked into the enclosed space may accumulate and form large cloud of explosive mixture with air.
The absence of effective improvements in asymmetric combustion and apparently shortened flame penetration finally develop a worsened burnout, decreased O2 at the furnace outlet, and lowered NOx emissions as CL decreased.
Pyrolysis, which is also the first step in gasification and combustion, occurs in the absence or near absence of oxygen, and it is thus distinct from combustion (burning), which can take place only if sufficient oxygen is present.
