Keywords: diesel engines.

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Keywords: diesel engines.

The article describes new competitive engine types targeted at marine and river flee market as well as multi-purpose diesel-generator sets manufactured by JSV ?ZVEZDA?.

Keywords: diesel engines.

The article considers the conditions affecting the interaction between the diesel-generator sets and the UPS's they power. Among the problems discussed are: selection of engine type, identification of power needed to compensate the energy consumed from the battery, and the optimum way of matching the characteristics of the both units.

Keywords: diesel engines.

The possibility of increasing performance into the ICE cylinder is considered when the compression process in a two-stroke ICE with conventional compression is changed on compression for the three- stroke ICE with entropy rising compression. It is shown that the final compression temperature can be increased up to 2,5 or the charge mass can be increased up to 6 under the unchangeable final pressure in the cylinder, divided into two sections by the transverse partition with the hole and valve. The internal ballistics of the compress process into the ICE cylinder at isobaric throttling is analyzed.

Keywords: diesel engines.

The technology in question involves identification of power developed by a marine propulsion engine based on fuel consumption. The latter is measured using gauging-tank and fuel rack position.

Keywords: diesel engines.

The results are discussed of analysis and test study of bending stresses in a mirror-symmetrical 6-web crankshaft for medium-speed diesel engine. The calculations were based on a newly developed dedicated analysis method. Actual bending deformations have been measured with micro strain gauges with nominal length 1 mm, located directly on bearing fillets. A design of a mirror-symmetrical 6-web crankshaft, destined primarily for medium-speed diesel engine tupe 6D50M (6??31,8/33) coupled with type MS99-9/8 alternator, used in marine and stationary power plants. The design ensures, under certain conditions, sufficient fatique strength safety margin and high service reliability.

Keywords: diesel engines.

The method is set forth enabling to formulate the generalized invariant characteristics of fuel injection system performance in marine diesel engines, basing on test results. The example is described of a performance index derived and the results of a practical implementation thereof.

Keywords: diesel engines.

The results are presented of the experiments carried out in order to identify a correspondence between the geometry of an electro- hydraulic injector parts and its response. The curves have been drawn representing response time vs. various parameters of the injector.

Keywords: diesel engines.

The system is described intended for preparation of fuel/water emulsion. The system provides for use of heavy fuel/water mix in marine diesel engines, which results in better engine performance and environmental specifications.

Keywords: diesel engines.

The new technology is described of fine purification of worked lube oil. The technology developed by VIITiN makes use of centrifugation with the addition of a breaking agent at the preliminary phase of the purification process. At the second phase, membrane micro-filters are used to achieve really fine purification.

Keywords: diesel engines.

Keywords: diesel engines.

The research has been carried out targeted at optimization of plasma heat insulation coating applied onto the cylinder liners of ?Kaspy-40? marine engines for small boats. Plasma coating of Zirconium oxide added with 7% of titanium as a binder is being applied in discrete (staggered) order onto water-cooled cylinder liner surface. The technology is demonstrated as improving cold start engine characteristics. It also results in lower (by 2?3%, as compared with the reference engine) fuel consumption and lower (by 1,5%) lube oil consumption. All the above results have been endorsed by tests. The parameters of the coating technology have been optimized.

Keywords: diesel engines.

The author looks into the most typical causes of crankshaft failures in 6??? 36/45 engines powering river-going vessels. Recommendations are offered on crankshaft failure prevention and correction.

Keywords: diesel engines.

A factor is offered descriptive of average load on a truck engine in field operation. The factor is proportional to average fuel consumption per mile and average truck speed.

Keywords: diesel engines.

The cromatographic analysis of engine exhaust gas for individual hydrocarbons has been carried out on the engine operating on summer type fuel. 55% to 75% of the total hydrocarbons has been proved to fall into the 2-nd and the 3-nd groups, i.e. to be saturated and unsaturated ones. About 90% of the total hydrocarbons are unsaturated. Methane did not exceed 2 to 3% of the total hydrocarbons.

Keywords: diesel engines.

The study described concerns performance of exhaust gas catalytic converter used in car and tractor diesel engines. The method in question involves high-temperature homogeneous reduction. Based on said method, the apparatus has been developed for reduction nitrogen oxides in exhaust gases of stationary diesel power units.

Keywords: diesel engines.

The overview is offered of various approaches to qualification of small marine engines. Based on calculations and service experience, the author recommends introduction of so-called service quality principle as an evaluation criterion of production methods' quality. The principle is based on actual service conditions of some types of small marine engines. The implementation of the above principle would contribute in lowering of production costs without sacrificing engine's quality, thus enhancing its competitiveness.

Keywords: diesel engines.

Crosshead engine arrangement is described that differs from known configurations in general layout and crosshead shape.