Charge compression

Zhao, R, Homogeneous Charge Compression Ignition (HCCI) Engines, Warrendale, PA Society of Automotive Engineers, 2003. 

The dianion 16 derived from this structure has such an intensity of negative charge compressed into a small space that an ideal microenvironment is created for divalent metals ions 17 [Eq. (3)]. The molecule enjoys a vise-like shape and a grip that holds calcium or magnesium ions tightly 15). 

In Fuel Compositions for Homogeneous Charge Compression Ignition Engines . Eur. Pat. Appl., No EP1371715, 2003. 

Temperature prior to the turbo-charging compression process = 70°F. 

Thring RH. Homogeneous-charge compression-ignition (HCCI) engines. Warrendale (PA) SAE 1989. 

Clark found that the initiatory power of diazodinitrophenol is about twice that of mercury fulminate and slightly less than that of lead aside. His experiments were made with 0.5-gram charges of the high explosives in No. 8 detonator capsules, with reenforcing caps, and with charges compressed under a pressure of 3400 pounds per square inch. He reported the results which are tabulated below. 

Braga, D., D Oria, E., Grepioni, F., Mota, F., Novoa, J. J., Rovira, C., 0-H...0 interactions involving doubly charged anions Charge compression in carbonate- bicarbonate crystals. Chem. Eur. J. 2002, 8, 1173-1180. 

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