The optimum working parameters for two working conditions of the engine were used to adjust the four working parameters.
(2) The temperature was maintained separately at five working parameters (250°C, 400°C, 600°C, 800°C, and 1,000°C) for 1 h.
Effects of four working parameters: temperature, time, particle size, and carbonate dosage, taken each one at two levels, on the uranium recovery efficiency, were assessed and optimized.
Single-factor and multi-factor quadratic regressive orthogonal design test method were adopted in the experiments to find the relationship between noise and four adjustable working parameters.
Method of quadratic regressive orthogonal design test method was adopted in experiment designed to examine the dependence of specific fuel consumption on four adjustable working parameters when the above –mentioned oil mixture was used.
The equation of specific fuel consumption derived from the regressive test under each operating condition was set as the objective function and the ranges for the four adjustable working parameters were the given constraint condition.
The equation of noise from the regressive test under each operating condition was set as the objective function and the ranges for the four adjustable working parameters were the given constraint condition.
A S195 (8.8 kW) type single-cylinder diesel engine was used to determine the effect of four adjustable working parameters, i.e. intake-valve-closing angle, exhaust-valve-opening angle, fuel delivery angle and injection pressure (P, in 104 Pa) on noise when an oil mixture of 30% rapeseed oil and 70% diesel oil was used.
Gas-liquid flow ratio, gas-liquid mixing pressure and gas-liquid mixing speed were another three factors determined by working parameters.
Three Honda cars, one conventional (the Civic 2.0) and two hybrids (the Civic IMA and the Civic Hybrid), equipped to collect emissions as well as the engine and vehicle working parameters were driven three times by twenty drivers on the same urban route.
