Joseph Gonsalvis

St. Joseph Engineering College · Department of Mechanical Engineering

The performance of tooth-sum altered (ATS) gears is determined by the factors influenced by their profile geometry. This study aims to explore the influence of gear geometry modification on tribological aspects that affect surface wear in ATS spur gears. A computer code is developed to simulate surface wear numerically, using Archard's wear model,...

Two-stroke SI engine, once a very popular prime mover for two wheelers, is now found to be obsolete and can be seen only in some off-road and recreational applications like lawn movers, snowmobiles etc. This is due to its poor fuel consumption and high exhaust emissions resulted from fuel short-circuiting during scavenging process. Also implementat...

Asymmetric gears have evolved from the rising demand for power transmission drives with high load-carrying capacity, surface durability, and service life. Direct design and S± profile shifted system are the most common approaches used for enhancing design features by geometry modification in asymmetric gears. This paper aims at establishing asymmet...

Heating diesel fuel before injecting into the engine cylinder is the technique employed in this experiment with the primary objective of improving combustion and decreasing emission. This results in gasification of diesel when injected into the engine cylinder leading to better mixing, evaporation and combustion of diesel fuel. This also results in...

The contact interface between a gear pair in mesh is known to be partially rolling and sliding. Surface damage due to sliding wear in these types of contacts is primarily influenced by applied loads, material, and geometric properties. This paper explores the influence of dynamic load factors and specific sliding on surface wear in a gear pair with...

It is well known that in DI diesel engines the formation of NOx is chiefly due to the prevailing high pressure and temperature in the combustion chamber. The methods used for lowering NOx is by induction of water which is blended with diesel oil, which leads to longer delay period, improper combustion and lowered release of thermal energy of fuel t...

In the present study the effect of compression ratio on the performance and emission characteristics of a blend of Vateria Indica Oil Methyl Ester and neat diesel has been investigated. The oil has been extracted from the Vateria Indica seeds by Solvent method. The extracted oil has been subjected to a two step transesterification process for obtai...

In this work profile modification technique was used in design of spur gear. In this technique the tooth-sum is varied to obtain desired contact ratio and low contact stress for a specified center distance. A program has been developed by using C language to compute the contact stresses by varying the amount of profile shift for a tooth-sum of 100...

Introduction of water vapours directly or indirectly into the combustion chamber, is one of the effective and most economical tool in reducing oxides of nitrogen (NOx) and particulate matter (PM) in the exhaust gases of diesel engines. Many researchers have developed different systems to introduce water into the combustion chamber like direct water...

It is well known that in DI diesel engines the formation of NOx is chiefly due to the prevailing high pressure and temperature in the combustion chamber. The methods used for lowering NOx is by induction of water which is blended with diesel oil, which leads to longer delay period, improper combustion and lowered release of thermal energy of fuel t...

This paper deals with the contact stress, power loss, and pitting of spur gear tooth in altered tooth-sum gearing for a tooth-sum of 100 teeth when altered by ±4% tooth-sum. Analytical and experimental methods were performed to investigate and compare the altered tooth-sum gearing against the standard tooth-sum gearing. The experiments were perform...

In gearing smoothness in transmission of power depends mainly on the contact ratio. Contact ratio determines the load shared by the teeth in mesh and it will be lower when the contact ratio is higher. Therefore in high contact ratio gearing the load transfer from one tooth mesh to another takes place at a lower magnitude of load and the noise produ...

The modern trend in gear technology envisages the use of profile corrected gears in most of the power transmission applications. Flexibility in modifying the involute profile has helped improve the performance of gearing. Using profile shift gearing it is possible to alter the tooth-sum of a gear pair working between a specified center distance and...

In gearing smoothness in transmission of power depends mainly on the contact ratio. Contact ratio determines the load shared by the teeth in mesh and it will be lower when the contact ratio is higher. Therefore in high contact ratio gearing the load transfer from one tooth mesh to another takes place at a lower magnitude of load and the noise produ...

Doping of oxide with phosphorous can trap mobile ions and reduce the re-flow temperature. By adding boron the reflow temperature can be reduced further without excessive phosphorous, which may cause metal corrosion. Borophosphosilicate glass (BPSG) and phosphosilicate glass (PSG) processes are mainly used for premetal dielectric (PMD) applications....