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Trionic T5.2 uses a MAP (Manifold
Absolute Pressure) sensor to, indirectly, measure the weight of the air that has been drawn/forced into the cylinders. It uses a simple slotted aperture disc in conjunction with a crank position sensor to identify the Top Dead Center (TDC) for cylinders 1 & 4 and
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patented ion-current measurement to decide which cylinder was in the compression phase and had just ignited the air/fuel mixture. The ion-current measurement is thus used to synchronise the ignition's firing of the spark plug with the cylinder which is full of compressed air/fuel. This ion-current
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measurement can also determine whether there had been detonation or knocking when the cylinder fired. Finally, the ion-current measurement can be used to identify a misfire with outstanding accuracy.
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year 1993 and was discontinued the same year. This engine management system was used on the "long block" engines. It was superseded by the
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71:also to measure the engine's RPM.
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107:Automotive technology tradenames
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39:engine management system.
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16:Engine management system
102:Engine control systems
49:Engine Control Unit
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91:Categories
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53:Motorola
43:Features
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29:Trionic
27:in the
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