The most common variants are LH 2.2, which uses an Intel 8049 (MCS-48) microcontroller, and usually a 4 kB programme memory, and LH 2.4, which uses a Siemens 80535 microcontroller (a variant of Intel's 8051/MCS-51 architecture) and 32 kB programme memory based on the 27C256 chip.
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K-Jetronic debuted in the 1973.5 Porsche 911T in January 1973, and was later installed into a number of Porsche, Volkswagen, Audi, BMW, Mercedes-Benz, Rolls-Royce, Bentley, Lotus, Ferrari, Peugeot, Renault, Volvo, Saab, DeLorean and Ford automobiles.
The 190E (E for Einspritzung, or Fuel Injection) model uses the Bosch Jetronic Multi-Point Fuel Injection to meter fuel instead of the carburetor of 190 models.
1971 also saw the introduction of the B20E, which was a high compression version of the B20 which introduced Bosch D-Jetronic electronic fuel injection, giving a power figure of 100 kW SAE or 90 kW DIN.
Jetronic |