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L-Jetronic was often called Air-Flow Controlled (AFC) injection to further separate it from the pressure-controlled D-Jetronic — with the 'L' in its name derived from German: luft, meaning 'air'. In the system, air flow into the engine is measured by a moving vane (indicating engine load) known as the volume air flow sensor (VAF) — referred ...
The M110.92x and .93x engines are carburetor engines, with Solex 4A1 carburetor. 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).
The 1600 cc D-Jetronic fuel injection engine was standard equipment for all Type 3s sold in the US for model years 1968 thru 1973, but single and dual carb engines remained as available options for many markets around the world until the end of Type 3 production. In mid-1968, a three-speed fully automatic transaxle became available.
At launch, the 411 featured a 1679 cc engine with twin carburetors, subsequently modified in 1969 with Bosch D-Jetronic electronic fuel injection and with claimed power output increased from 68 to 80 PS (50 to 59 kW). This fuel-injected engine was shared with the mid-engined Porsche 914, also launched in 1969.
Bosch developed their D-Jetronic (D for Druckfühlergesteuert, German for "pressure-sensor-controlled"), from the Electrojector, which was first used on the VW 1600TL/E in 1967. This was a speed/density system, using engine speed and intake manifold air density to calculate "air mass" flow rate and thus fuel requirements.
The KE Jetronic system varied from the earlier, all mechanical system by the introduction of a more modern engine management "computer", which controlled idle speed, fuel rate, and air/fuel mixture. The final car of the 18 years running 107 series was a 500SL painted Signal Red, built on 4 August 1989; it currently resides in the Mercedes-Benz ...
The D-Jetronic was produced from 1967-1976 and first used on the VW 1600TL/E. The system was a speed/density system, using engine speed and intake manifold air density to calculate the amount of fuel to be injected. In 1974, Bosch introduced the K-Jetronic system, which used a continuous flow of fuel from the injectors (rather than the pulsed ...
The W116 was presented in September 1972. The model range initially included two versions of the M110 engine (straight-six with 2746 cc displacement) — the 280S (using a Solex carburetor) and the 280SE (using Bosch D-Jetronic injection), plus the 350SE, powered by the M116 engine (V8 with 3499 cc displacement). After the 1973 oil crisis, a ...