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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).
The M110.984 was the first engine with the new Bosch K-Jetronic injection. This system is mechanical. The air that is taken in is weighed to then determine the amount of fuel to inject. Power output: 130 kW (177 PS; 174 hp) at 6000 rpm up to April 1978; 136 kW (185 PS; 182 hp) at 5800 rpm from April 1978. Applications: 1975-1981 280E (W123)
Unpowered" multi-point injection systems without injection-timing controlling such as the Bosch K-Jetronic were commonly used from the mid-1970s until the early 1990s in passenger cars, although examples had existed earlier, such as the Rochester Ramjet offered on high-performance versions of the Chevrolet small-block engine from 1957 to 1965.
From 1975 onward they used the K-Jetronic mechanical fuel injection system, a less complicated system that proved to be much more reliable in the long run with injectors costing significantly less than those used on the D-Jetronic system. The W116 equipped with the K-Jetronic system used a cast-iron fuel distributor which can be prone to rust ...
In 1974, Bosch introduced the K-Jetronic system, which used a continuous flow of fuel from the injectors (rather than the pulsed flow of the D-Jetronic system). 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]
The 190 E (E for Einspritzung, or Fuel Injection) model uses the Bosch KE-Jetronic Multi-Point Fuel Injection to meter fuel instead of the carburetor of 190 models. Thanks to their fuel injection system and larger intake and exhaust valves, 190 E models made more power than non-fuel injected 190 models. [3]
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 3.0 L (2,960 cc) M104 featured KE-Jetronic fuel injection, cylinder specific ignition-timing, variable valve timing and under-piston cooling jets. Specifications Engine power @ 6400 rpm or 6300 (300E-24 300S 300SL-24): 217 to 228 hp (162 to 170 kW; 220 to 231 PS) (without catalytic converter ).version R129 300SL-24 has 170 kW (231 PS; 228 ...
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