Takemi Chikahisa

TL;DR: In this paper, the rate of combustion data were derived and analyzed using a double Wiebe's function approximation using two laboratory engines, one direct injection and one indirect injection, were operated for a range of speeds, loads, injection timings, fuels, and steady and transient conditions.

TL;DR: In this paper, the feasibility of rapeseed oil and palm oil for diesel fuel substitution in a naturally aspirated DI Diesel engine is evaluated, and means to reduce the carbon deposit buildup in vegetable oil combustion is found.

TL;DR: In this article, the freezing mechanism of a polymer electrolyte membrane fuel cell is investigated experimentally, and microscopic observations are conducted to clarify the freezing mechanisms in the cell, which can be classified into two types: freezing in the cathode catalyst layer at very low temperature like −20°C, and freezing due to supercooled water at the interface between the catalyst layer and the gas diffusion layer near 0°C like −10°C.

TL;DR: In this article, the performance of a single PEFC was investigated at temperatures from -3 to -25°C and pressures from 1 to 2 atm, and the results showed that it is necessary to heat the cell with an additional heat source in order to start the fuel cell below -5°C.