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Diesel Engine 1
Diesel Engine 2
Petrol/Diesel Engine
Save Energy
Inventor Rudolf Diesel
Crosshead Engine
Diesel Engine (truck)
Work at Truck Engine
Combustion Engine
Compression Ignition
Direct Injection
Side Comb. Chamber
Diesel Fuel
Not running
Test diagnostic
Injection Nozzle Tests
Pump Injectors
Particulate Filter
Two-stroke Engine
Marine engines 1
Marine engines 2
V-10 Diesel Engine
Internal Mixt. Form.
Mixture Preparation
Supply Pump
Diesel injection 2012

Common Rail 1
Common Rail 2
Common Rail 3
Common Rail 4
Common Rail 5
Common Rail 6
Common Rail 7
Common Rail 8
Common Rail 9
Common Rail 10

Fuel supply 2
Fuel supply 3
Repair 1
Repair 2
Repair 3
Throttle Pintle Nozzle
Hole Type Nozzle
Glowing System 1
Glowing System 2
Glowing System 3
Glowing Plug Sensor
Hole Type Nozzle
Injection Nozzle Tests
Injection Pump Test
Pump Injectors 1
Pump Injectors 2
Pump Injectors 3
Diesel Fuel Filter 1
Diesel Fuel Filter 2
Reverse Running
Fuel Cooling
In-line Inj. Pump
Injection Pump
In-line Pump (classic)
In-line Pump (P-type)
In-line Pump (M-type)
In-line Pump 4
In-line Pump 5
In-line Pump 6
In-line Pump 7
Centrifugal Governor
Fuel Piston Pump
Electr. Inline Pump
Distr. Type Pump 1
Distr. Type Pump 2
Axial Distr. Pump 1
Axial Distr. Pump 2
Axial Distr. Pump 3
Axial Distr. Pump 4
Axial Distr. Pump 5
Radial Distr. Pump 1
Radial Distr. Pump 2
Radial Distr. Pump 3
Electr. Diesel Control
Centrifugal Governor
Press. Red. Valve
Blocking-vane Pump
Fuel Filter - Hand Pump
Diesel Fuel
Fuel Preheating

Diesel Processes 1
Diesel Processes 2
Diesel Processes 3
Diesel Processes 4
Diesel Injection 1
Diesel Injection 2
In-line Injection Pump
Distributor Pump 1
Distributor Pump 2


         

Direct Injection






Function

The direct Diesel engine injection system should lower the fuel consumption, and reduce emissions, by simultaneously increasing power and torque especially for low numbers of revolution.

How it works

Pure air is sucked in. With a mechanical high-pressure pump, powered by the engine, the fuel is injected with 250 to 2000 bar into the highly compressed air. The particle emission decreases with rising pressure. The fuel is injected directly to the wall of an upwards open hollow cavity in the piston. The immediate combustion is toned down somewhat, because the fuel burns down in layers. This reduces the hard running of the engine. Due to the lower heat dissipation, a pre-heating system is not necessary, or only when it is cold (-5°C). The side combustion chamber system does make use of a pre-heating system. For the direct injection system in the petrol engine with approx. 100 bar injection pressure, the ignition system determines the ignition time.
The harder engine run is reduced by a little lower compression. The raised nitrogen oxides are compensated by exhaust gas recirculation or the DeNOx-catalyst.
Especially the diesel engine, but also the petrol-driven car, display more torque and a higher achievement. The additional advantage for the diesel engine is that this higher torque is achieved at low engine speeds. The maximum engine speed is limited though.



Open flap: low spin effect - Variable swirl control: -0.5% CO2 - Air is drawn into the combustion chamber - Open flap: low spin effect - Closed flap: high swirl effect- Controlled swirl control allows optimum mixture formation




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