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Mechanical fuel injection, 'K' stands for German: "Kontinuierlich", meaning continuous.Commonly called 'Continuous Injection System (CIS) in the USA. K-Jetronic is different from pulsed injection systems in that the fuel flows continuously from all injectors, while the fuel pump pressurises the fuel up to approximately 5 bar (73.5 psi).
Bosch K-Jetronic multipoint mechanical fuel injection: ZDJL 851B: 130 hp (96 kW) at 5750 rpm: 19.2 kg⋅m (188 N⋅m; 139 lbf⋅ft) at 4250 rpm: 9.8:1: Bosch LE2-Jetronic multipoint electronic fuel injection: ZDJL 851Y ZDJL 851X: 117 hp (86 kW) at 5750 rpm: 8.8:1: Bosch LU2-Jetronic multipoint electronic fuel injection with catalytic converter
The M110.98x and .99x engines are fuel-injected engines, with Bosch D-Jetronic up to the .983 and K-Jetronic from the .984. All M110 engines have a displacement of 2.7 L; 167.6 cu in (2,746 cc) and a bore and stroke of 86 mm × 78.8 mm (3.39 in × 3.10 in). Firing order is 1-5-3-6-2-4. Amount of coolant in the radiator was 11 litres (2.9 US gal ...
K-Jetronic was a mechanical injection system, using a plunger actuated by the intake manifold pressure which then controlled the fuel flow to the injectors. [55] Also in 1974, Bosch introduced the L-Jetronic system, a pulsed flow system which used an air flow meter to calculate the amount of fuel required. L-Jetronic was widely adopted on ...
By the mid-1980s, JECS were using LH-Jetronic, and the new Bosch hotwire mass airflow meter. The early JECS LH-Jetronic systems were based on a Motorola 6800 architecture, using many Hitachi components. The earliest hotwire meters were still from Germany, but by the end of the 1980s all of the system components (pumps, sensors, injectors, ECU ...
Bosch built this system under licence, and marketed it from 1967 as the D-Jetronic. [21] In 1973, Bosch introduced their first self-developed multi-point injection systems, the electronic L-Jetronic, and the mechanical, unpowered K-Jetronic. [23] Their fully digital Motronic system was introduced in 1979. It found widespread use in German ...
US models sold from 1976 through 1979 used the Bosch K Jetronic system, an entirely mechanical fuel injection system. From 1974, the front and rear bumpers were dramatically lengthened, by 8 inches (203 mm) on each end, to comply with the U.S. National Highway Traffic Safety Administration regulations that mandated no damage at an impact of 5 ...
The use of K-Jetronic CIS Bosch fuel injection in two of the three models in the line up— the 911 and 911S models, retaining the narrow rear wings of the old 2.4, now had a detuned version of the RS engine producing 150 and 175 PS (110 and 129 kW; 148 and 173 hp) respectively.