Table of contents: Intake manifold heating device ↓ Idle speed control solenoid valve ↓ Control of the intake manifold… ↓ Control of the bimetallic spring of… ↓ Pneumatic valve with thermal time… ↓ Calibration data for the Pierburg… ↓
The DT and DS engines were equipped with a Pierburg 2E2 emulsion-type carburetor, two-chamber, with sequential opening of the throttle valves.
The carburetor has two main metering systems of the 1st and 2nd chambers, an idle system of the 1st chamber with a transition system, a transition system of the 2nd chamber, an economizer of power modes, an economizer, a single-particle accelerator pump, an automatic device for starting and heating of a mixed type, which uses a bimetallic spring with electric heating and circulation of heated liquid from the engine cooling system, and a pneumatic drive of the air damper and a device for electric heating of the intake manifold are used. The carburetor has a pneumatic drive of the throttle valve of the 1st chamber, which controls its movements in the idle and forced idle modes, as well as a pneumatic drive of the throttle valve of the 2nd chamber. At forced idle, the economizer of the forced idle is activated.
carburetor number according to the manufacturer's catalogue:
- engine DT 026 129 015T;
- dS engine: 026 129 015.
Intake manifold heating device
Current consumption when measured on a car. A: 20-30.
Nominal resistance at 20°C, Ohm: 0.25-0.50.
Idle speed control solenoid valve
Winding resistance, Ohm: 30-40.
Crankshaft rotation frequency corresponding to valve engagement, rpm: 1200.
Control of the intake manifold heating device
Contact closing temperature when measured between plugs "+" and "R",°C: 55.
Contact opening temperature when measured between plugs "+" and "R",°C: 65.
Control of the bimetallic spring of the automatic starter and heating
Contact opening temperature when measured between plugs "+" and "C",°C: 33.
Contact closing temperature when measured between plugs "+" and "C",°C: 42.
Pneumatic valve with thermal time relay
Nominal resistance at a temperature of 20-30°C, Ohm: 6.0±1.2.
Temperature,°C:
- valve opening: below "plus" 4;
- valve closing: above "plus" 15.
Calibration data for the Pierburg 2E2 carburetor
*The numerator shows the data for the DT engine carburetor, the denominator shows the data for the DS engine carburetor.