Abstract:
To meet the present requirements of the automotive industry, there is continuous improvement
in the performance and exhaust emission of restored internal combustion (IC) diesel engine. This
research presents the experimental data regarding the effect of exhaust gas temperature, cooling
temperature, fuel consumption and emission gases of the restored and brand-new diesel IC
engines. Catalytic convertor with modified muffler was installed to exhaust manifold to reduce
emission. Exhaust gas tester (EGT) probe and temperature sensors were installed to muffler,
upper & lower trunk hoses respectively. Arduino based sensors were used to this scenario. Dust
sensor, carbon monoxide (CO) sensor and hydrocarbon (HC) sensors were used to test emission
gases through the modified muffler. Researchers were developed a customized emission tester
based on Arduino. The results show same values for cooling system temperature. The emission
test data such as CO, HC & K-Factor of brand-new and restored engine were tested with ideal
and high RPM conditions and there is a significant variation in exhaust gas temperature test data.
However, those values do not surpass the vehicle emission standards in Sri Lanka. Addition of
customized parts, change of mechanical properties due to the oldness of the engine, advance
injection pump or retard angle, adjustment of injection timing can be caused for those variations.
The results strongly indicate that modification of restored engine can be used for vehicle by
maintain the Sri Lankan emission standards. Authors recommended restoring old engines by
installing customized versions of modern technological components. Ultimately authors can
conclude that old engine can be restored to satisfy the Sri Lankan motor traffic standards and
emission standards with minimum cost and the result of the research proved that the performance
parameters provide a solution to vehicle scraps and give an idea about restoring an old vehicle
in profitable way