The phrase "at which the engine" is correct and usable in written English.
It can be used in contexts discussing mechanics, engineering, or any situation where the function or operation of an engine is being described.
Example: "The technician explained the specific RPM at which the engine operates most efficiently."
Alternatives: "where the engine" or "in which the engine".
A mean value engine model is used together with numerical optimal control to investigate the interplay between electric machine, gearbox and engine with its turbocharger dynamics in particular how they influence the manner and rate at which the engine should be controlled in order to reach a synchronized speed with the gear-box, enabling lock-up.
The Red Line on the tach shows the point at which the engine will overheat, powertrain will fail and tires are operating above rating unless the speed of the engine is reduced.
Engineers lower engine noise by reducing the maximum speed at which the engines move air.
On the date mentioned the crew was engaged, alongside the track of the railway company at Howell, Indiana, in constructing the foundation of a coal tipple at which the engines might coal.
The model of the pilot's operation in airworthiness compliance flight test of VMCG is established in this method, and the time interval between the instant at which the critical engine is failed and the instant at which the pilot recognizes and reacts to the engine failure is considered in the model.
For the Prius these spots are ~15 mph (24 km/h) and 25 mph (40 km/h), and correspond to times at which the gas engine is powering the car and charging the battery.
Again, Biggs' eyes well up when describing his favorite moment during each airship flight, the point at which the dirigible's engine shuts off and the balloon continues to sail through the air, silently.
When de Havilland perished here the other day it seemed clear to me that he must have reached the speed at which the air resistance balanced the engine power and brought him to a standstill.
Processing time semantics leads to non-determinism, since the behavior of the system depends on the speed at which elements enter the engine and on the speed at which the elements flow between operators inside the engine, which is not under direct control of the developer.
In order to go backwards the driver stopped the engine and pushed a button, at which point the engine itself went backwards.The microcars were judged a great success and went on public display in Szekesfehervar's 1956 May Day parade, together with an Isetta and an Uttoro (Pioneer), from the eastern city of Debrecen.
It was an example of an art and science at which The Huffington Post excels: search engine optimization, or S.E.O.
