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… ↓
The engine of the "DS" model was 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 diaphragm 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, controlling its movements in the idle and forced idle modes, as well as a pneumatic drive of the throttle valve of the 2nd chamber. In the forced idle code, the forced idle economizer is activated.
carburetor number according to the Audi catalogue - cars with manual transmission: 026 129 015; cars with automatic transmission: 026 129 015A.
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.
The crankshaft rotation frequency corresponding to valve activation, rpm 1200.
Four-plug coolant temperature sensor (mounted on the left side of the cylinder head).
Control of the intake manifold heating device
Contact closure 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 closure temperature when measured between plugs "+" and "C",°C: > 42.
Pneumatic valve with thermal time relay
Nominal resistance at temperature 20-33°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
[This article was copied from an online resource: audimanual.ru]