A knock sensor, also referred to as a detonation sensor, works like a tuned microphone to pick up pinging or knocking in the engine. The sensor sends a signal to the car’s computer, which can adjust the ignition timing in response, to keep the engine running smoothly.
The giant 350 cid or 427 cid engines sucked down the gasoline, while engines which are 1/6 as big in piston displacement CAN get much higher gas mileage. But there are unspoken details. The impressive numbers of 30 mpg or 40 mpg ARE possible, but only if you drive in a very restrained manner!
A 1 litre engine has a cylinder capacity equal in volume to 1 litre (0.25 liters per cylinder in a 4 cylinder engine - this is filled with fuel and air). The mixture is then compressed ready for ignition and combustion within the cylinder. The ratio of compression is another key element in an engine and if it is too high you can create engine knock also known as detonation so this is another thing to factor in when increasing the cylinder capacity of an engine.
May 29, 2019 · With RDEs, there is an effective pressure gain: The intense and rapid energy release from detonation can be used to generate extremely high thrust from a relatively small combustor. In addition, these engines are compact, contain no moving parts, are more efficient than conventional combustion systems, provide steady thrust at high frequencies and can be integrated with existing aircraft and rocket engine hardware.
The detonation tendency in petrol engines for specified conditions of fuel rating, compression ratio, speed etc. can be con-trolled by having (a) smaller cylinder bore (b) bigger cylinder bore
Rotating detonation engines are a novel device for generating thrust from combustion, in a highly efficient, yet mechanically simple form. This chapter presents a detailed literature review of rotating detonation engines. Particular focus is placed on the theoretical aspects and the fundamental operating principles of these engines. The review covers both experimental and computational studies ...
Autoignition And Detonation Development Induced By A Hot Spot In Fuel-Lean And Co2 Diluted N-Heptane/Air Mixtures; Friday, March 01, 2019
Abstract: Rotating detonation engines (RDEs) are emerging as a practical approach for pressure gain combustion, with the potential to significantly change propulsion and power generation systems. Apart from increased efficiency, RDEs tend to be more compact than conventional deflagration-based combustors and can take radically different form ...
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