Abstract

Dynamometer tests have been performed on a Toyota Gasoline Engine Model 22RSOHC to obtain torque, horsepower, and specific fuel consumption by testing the fuels individually and also using Oxy-Hydrogen with each. The data was compiled into total performance maps.  Fuels tested include Gasoline, Gasohol-10, LPG, and CNG. 

Objective

The objective was to perform dynamometer tests on a Toyota Gasoline Engine Model 22RSOHC to obtain torque, horsepower, and specific fuel consumption by testing the fuels individually and also using Oxy-Hydrogen with each. The total performance maps provided information on whether the Gasohol-10, LPG, and CNG or the Oxy-Hydrogen system helps in reducing fuel consumption. 

Overall, eight dynamometer tests were run with different fuel combinations in order to determine the performance analysis of the two systems, with or without Oxy-Hydrogen. Three fuel types were used Gasoline, Gasohol-10, LPG, and CNG. Each test was compared to the 100 % Gasoline, which was the baseline control test. In order to maintain consistency and an unbiased evaluation, all tests were performed on the same Toyota Gasoline Engine Model 22RSOHC, using the same dynamometer, under the same procedure.

Before any dynamometer tests were run, each fuel type’s energy content was calculated by way of heat of combustion assessments. An adiabatic bomb calorimeter was used for these processes. By calculating the energy content of each fuel, a theoretical analysis could aid in prediction of each fuel’s relative power output.

Oxy-Hydrogen was manufactured by Solar Space Frame Industrial Co., Ltd. Through the process of electrolysis, the system separated water into hydrogen and oxygen. The separated gases were then directed into the airflow prior to the Venturi system after the air filter. 

Background

The use of LPG as a fuel source has been around for over 30 years in Thailand. Lot of research and modification engine parts had been completed and test. Now a day LPG can perform perfectly in Thailand environment and conditions.

The hydrogen/oxygen generator was first developed in 1918 by Charles Frazer. Oxy-Hydrogen systems help improve combustion characteristics of petroleum based fuel sources. The gases created act as a catalyst to the fuel, creating better propagation, and more complete combustion.  They also are said to reduce hydrocarbons in the exhaust, reducing emissions.

The results reported testing Oxy-Hydrogen on a Gasoline engine with an engine dynamometer.  The test used three types of fuel Gasoline, Gasohol-10, LPG, and CNG. 

Engine Specifications

Picture 1, 22RSOHC engine 

Table 1 22RSOHC engine specifications

 

Analysis

Table 2 Test Results

Comparing the charts between Gasoline tests with and without Oxy-Hydrogen, It is better improvement with Oxy-Hydrogen than Gasoline only tests. Also comparing the Gasohol and LPG tests with and without Oxy-Hydrogen, It is better improvement for both fuel types with Oxy-Hydrogen.

SUMMARY

The Gasoline with Oxy-Hydrogen test proved the ability of Gasoline to produce more torque 116.89 lb-ft instead 93.05 lb-ft at a lower fuel consumption rate than diesel fuel (2.62 GPH than 3.49 GPH). The energy content by weight of the Gasoline is 10,748.07 Cal/g, see Table 2 above.

The Gasohol-10 with Oxy-Hydrogen test proved the ability of Gasohol-10 to produce more torque 112.70 lb-ft instead 90.16 lb-ft at a lower fuel consumption rate than Gasoline (3.44 GPH than 4.27 GPH). The energy content by weight of the Gasohol-10 is actually 3.24 % less than Gasoline, see Table 2 above.

The LPG with Oxy-Hydrogen test proved the ability of LPG to produce more torque 89.33 lb-ft instead 71.46 lb-ft at a lower fuel consumption rate than LPG (3.75 GPH than 4.54 GPH). The energy content by weight of the LPG oil is actually 23.58 % less than Gasoline, see Table 2 above.

The CNG with Oxy-Hydrogen test proved the ability of CNG to produce more torque 77.43 lb-ft instead 61.64 lb-ft at a lower fuel consumption rate than CNG (4.02 GPH than 4.83 GPH). The energy content by weight of the CNG oil is actually 33.76 % less than Gasoline, see Table 2 above.

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