The device was tested
in the Head Specialized Design Office of engines of average capacities
(c.Kharkov).
At research all necessary
parameters were determined according to GOST 14846-81, including consumption
of fuel and air, and also emissions of nitric oxides, carbon monoxides,
hydrocarbons and opacity of the exhaust gases. For definition of emissions
of harmful substances gas-analyzing equipment of continuous action have
been used:
- Nitric
oxides (NOx) - chemiluminescent gas
analyzer 344 ÕË-01,
- carbon monoxide (CO)
- infra-red not-disseminating analyzer 121 ÄÔ,
- Cumulative carbohydrates
(CH) - hydrogen-flame ionization detector 334 ÊÏÈ03.
Opacity of the exhaust
gases was determined by opacimeter "Hartridzh -ÌÊ-3Ì".
Research was carried
out by way of consecutive taking of adjusting characteristics on adjusting
corner of fuel injection advance at rotation frequencies of the diesel
engine crankshaft n=1500 and 200 min - 1 and loading characteristics at n=1000, 1500 and
2000 min- 1 at the certain optimum corners under the specific
fuel consumption at n=1500 min- 1 without the Modifier and
with the Modifier. The range of loadings change under loading characteristics
made from idling up to Ne max.
The modifier was
installed in the system of fuel delivery
after the filter of fine fuel clearing on
the input of the fuel pump of a high pressure.
Researches were carried out on diesel
fuel in accordance with GOST 305-82.
As a result of research the following
conclusions were made:
1. Character of change of adjusting corner
of injection advance at frequencies of rotation of a crankshaft of diesel
engine n=2000 min- 1 and n=1500 min- 1 has more flat characteristic
in comparison with the initial variant, and sizes of optimum corners
are displaced accordingly for 1,5 and 2 degrees.
2. The
hourly and specific fuel consumption on high-speed operating modes of
the diesel engine n=1500 min- 1 and n=2000 min - 1 have decreased accordingly to 13,5 and 13,2
%, and at frequency of rotation of the crankshaft of the diesel engine
n=1000 min- 1 - to 17,55 %, achieving the maximal value
in the range of average loadings.
3. At rotation frequency
of crankshaft of the diesel engine of the investigated loading and high-speed
modes opacity has reduced on the average for 20,7 %, and in a mode
of free acceleration – for 22 %.
4. Emission of nitric oxides with
the exhaust gases of the diesel engine in comparison with the initial
variant has reduced for 10,8-16,3 % in all the range of the investigated loading-speed characteristics.
5. Emission of carbon monoxide in all
the range of the investigated loading-speed modes has decreased for 13,74 - 20,14 % in comparison
with the initial variant.
6. Emission of hydrocarbons with the
exhaust gases of the diesel engine in all the range of the investigated loading-speed modes
has decreased on the average for 5,6 %.
Conclusion.
As a result of researches
the conclusion was made, that use of the Modifier
leads to reduction of the delay period of spontaneous ignition, reduces
rigidity of work of the diesel engine, increases
motor-resource of the engine, reduces toxicity of the
exhaust gases. Application of the Modifier allows considerably
improving parameters of the hourly
and specific fuel consumption resulting in increase
of the technical-economic and operational characteristics of
the diesel engine. Also application of the Modifier allows considerably
lowing the opacity and emissions of
carbon monoxides, nitric oxides and hydrocarbons in all
the range of the loading -speed modes resulting in improvement of
ecological parameters of the diesel engine. The received parameters
and results testify the high reliability and efficiency of the Modifier
that allows recommending it for application in any automobile engines.
Fig. 1. Adjusting characteristics on
the adjusting corner of an injection advance of fuel.
Fig. 2. Dependences of hourly and specific
fuel consumption and opacity the exhaust gases on loading.
Fig. 3. Dependences of emissions of harmful
substances with the exhaust gases on loading.
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