All cells exhibit a voltage difference across the cell membrane. Nerve cells and muscle cells are excitable. Their cell membrane can produce electrochemical impulses and conduct them along the membrane. In muscle cells, this electric phenomenon is also associated with the contraction of the cell.3) the single long nerve fiber, the axon. These are described in Figure 2.1. The body of a nerve cell (see also (Schad and Ford, 1973)) is similar to that of all other cells. The cell body generally includes the nucleus, mitochondria, endoplasmic reticulum, ribosomes, and other organelles.
Knocking (also knock, detonation, spark knock, pinging or pinking) in spark-ignition internal combustion engines occurs when combustion of the air/fuel mixture in the cylinder does not start off correctly in response to ignition by the spark plug, but one or more pockets of air/fuel mixture explode outside the envelope of the normal combustion front ...
AS-IF the engine were knocking all the time-because it knows it can't really tell what's going on without it's ears (the knock sensors). The difference between driving with bad vs. working is very noticeable to me. For some drivers, it's probably more of a something doesn't feel quite right type of thing. Heath. So does the knock sensor mostly effect engine performance at higher sppeds or can you have issues around town and when accelerating from a stop.