10 results about "Ethanol fuel" patented technology

To provide a start control device capable of securing excellent startability even when ethanol concentration in fuel is high and an intake air temperature and a temperature of an internal combustion engine are low.SOLUTION: A start control device (30) applied to an internal combustion engine (E) driven by combustion of fuel containing ethanol includes: ethanol concentration determination means (31) for determining ethanol concentration in the fuel; and ignition timing change means (33) for changing ignition timing when starting the internal combustion engine (E) according to the ethanol concentration, wherein if the ethanol concentration determination means (31) determines that the ethanol concentration exceeds a threshold value when starting the internal combustion engine (E), the ignition timing change means (33) executes 360° ignition, which executes ignition every 360° of rotation of a crankshaft (3) of the internal combustion engine (E) until the internal combustion engine (E) starts.SELECTED DRAWING: Figure 3

The invention relates to the field of fuel cell anode catalysts, in particular to a preparation method of a Pd / h-BNNSs / rGO composite catalyst for a direct ethanol fuel cell, which comprises the following steps: taking reduced graphene oxide (rGO) as a substrate and compounding 5-20% by mass of hexagonal boron nitride nanosheets (h-BNNSs) to form a composite carrier; palladium (Pd) nanoparticles accounting for 16 + / -0.5 wt% of the total mass of the catalyst are loaded on the catalyst; the preparation method mainly comprises the following steps: preparing graphene oxide (GO) by an improved Hummer method, carrying out ultrasonic dispersion on GO and h-BNNSs, carrying out hydrothermal reaction at 180 DEG C for 6 hours, carrying out freeze drying to prepare a composite carrier, and loading Pd by a NaBH4 reduction method. The catalyst shows excellent performance on ethanol electrooxidation in an alkaline medium, has an electrochemical active area up to 202.31 m < 2 > / g, peak current density (5.9 times of commercial Pd / C) of 5549.0 mA / mg, excellent stability that activity attenuation is only 50% after 300 cycles, and remarkably improved CO poisoning resistance (the Jf / Jb ratio reaches 1.35), and shows strong industrial application potential.

A wrought alloy for a bearing material for use as valve guide or in turbochargers of internal-combustion engines operated with ethanol-containing fuels. The composition of the wrought alloy is as follows in wt %: Zn: 25.0-34.0%; Fe: 0.8-1.2%; Sn: 0.8-1.2%; Al: 1.3-1.7%; Si: 0.2-0.45%; and Pb: up to 0.1%, with the balance being copper and unavoidable impurities. The sum total of all elements not belonging to the group of the elements copper, zinc, iron, tin, aluminum and silicon is at most 0.3 wt %. The alloy has a microstructure including precipitates in the form of silicides with a fraction of 0.5 to 2.0 vol %.

The invention provides a marine ethanol fuel supply system and an operation control method.The supply system at least comprises a first heat exchanger and a second heat exchanger, a first flow channel and a second flow channel which are not communicated with each other are arranged in the first heat exchanger, the inlet end of the first flow channel is connected with an ethanol storage tank, and the outlet end of the first flow channel is connected with an ethanol consumption unit; the inlet end of the second flow channel is connected with the second heat exchanger, the outlet end of the second flow channel is connected with the water glycol solution expansion water cabinet, a third flow channel and a fourth flow channel which are not communicated are arranged in the second heat exchanger, and the inlet end of the third flow channel is connected with the water glycol solution expansion water cabinet, and the outlet end of the third flow channel is connected with the first heat exchanger. The inlet end of the fourth runner is connected with the water source inlet, and the outlet end is connected with the water source outlet. The low-temperature ethanol fuel can utilize part of heat of water, the water glycol solution and inlet water conduct heat exchange in the second heat exchanger, the heat lost by the water glycol solution in the first heat exchanger is supplemented, and the temperature requirement of the ethanol fuel in the supply system is met.

The invention belongs to the technical field of catalysts, and particularly relates to a heterostructure catalyst as well as a preparation method and application thereof. The heterostructure catalyst comprises a carbon carrier and metal particles loaded on the carbon carrier, the metal particles comprise PdZn nano alloy and Co nano particles; and a heterojunction interface structure is arranged between the PdZn nano-alloy and the Co nano-particles. The PdZn alloy particles and the Co particles form a particle-particle heterostructure with a strong interface coupling effect, the EOR catalytic activity of the heterostructure catalyst is improved, the EOR catalytic activity is almost 10.7 times of the mass activity of a traditional Pd / C catalyst, and the catalyst can be applied to an anode catalyst of a direct ethanol fuel cell. Meanwhile, the method also has higher C1 pathway selectivity, effectively improves the utilization rate of the ethanol fuel, has a remarkable cost advantage, and can be used for manufacturing ethanol fuel cells.

The invention belongs to the field of fuel cells, and relates to a preparation method of a conductive oxide supported palladium ethanol fuel cell anode catalyst, the catalyst is a Pd / c-TiO2 (at) MoO3 catalyst, the preparation method comprises the following steps: mixing TiO2 and a molybdenum source, roasting to obtain TiO2 (at) MoO3, and carrying out chemical reduction to obtain conductive c-TiO2 (at) MoO3; after dispersing, adding a palladium precursor for adsorption, reducing by a reducing agent, washing and drying to obtain a Pd / c-TiO2 / MoO3 anode catalyst, and loading the Pd / c-TiO2 / MoO3 anode catalyst on an electrode substrate for activation to obtain the working electrode. The method is simple in process and high in controllability, and the obtained catalyst is excellent in conductivity and catalytic performance, can be used for direct ethanol fuel cell anode catalytic ethanol oxidation reaction and is good in application prospect. The invention provides a novel and feasible solution for the stability problem of the anode catalyst of the direct ethanol fuel cell, and is expected to promote the industrial application process of the direct ethanol fuel cell.

To provide a start control device capable of securing excellent startability even when ethanol concentration in fuel is high and an outside air temperature and an intake air temperature of an internal combustion engine are low.SOLUTION: A start control device (30) applied to an internal combustion engine (E) driven by combustion of fuel containing ethanol includes: ethanol concentration determination means (31) for determining ethanol concentration in the fuel; and ignition timing change means (33) for changing ignition timing when starting the internal combustion engine (E) according to the ethanol concentration, wherein if the ethanol concentration determination means (31) determines that the ethanol concentration exceeds a threshold value when starting the internal combustion engine (E), the ignition timing change means (33) applies ignition timing that is more advanced than ignition timing applied after the internal combustion engine (E) is started, until the internal combustion engine (E) is started.SELECTED DRAWING: Figure 3

The present technology relates generally to a fuel cell electrode including about 1 wt.% to about 10 wt.% carrageenan, about 0.5 wt.% to about 50 wt.% metal oxide having a dimension of about 0.1 nm to about 100 nm, and about 1 wt.% to about 20 wt.% of a catalyst comprising CeO2 and a metal catalyst. Fuel cell electrodes using carrageenan instead of NAFION® are more environmentally friendly and biodegradable. The fuel cell electrodes are useful for preparing direct ethanol fuel cells.

The invention relates to a misfire diagnosis method and structure based on ethanol fuel concentration. The method comprises the following steps: judging an enabling condition; determining a misfire detection mode; testing and calculating an extreme value of a misfire threshold, respectively using ethanol fuel with the lowest ethanol concentration and ethanol fuel with the highest ethanol concentration, collecting crankshaft rotation time data under the corresponding ethanol concentration, and calculating the misfire threshold; reading the ethanol concentration, calculating a misfire threshold value according to the ethanol concentration, reading the ethanol concentration, and calculating a misfire threshold value corresponding to the target ethanol concentration according to the misfire threshold values corresponding to the lowest ethanol concentration and the highest ethanol concentration respectively and a coefficient obtained according to the ethanol concentration; determining a misfire rate, identifying a misfire cylinder, performing statistics according to the misfire index to obtain the misfire rate, and correspondingly judging the misfire cylinder; determining a detected misfire type; and a misfire test result and a misfire cylinder are reported. Compared with the prior art, the method has the advantage that the fire working conditions under different ethanol concentrations can be accurately identified.

This invention belongs to the field of fuel cell technology, specifically relating to a method for preparing an anode catalyst layer for an ethanol fuel cell based on a Pd@Ni / Co3O4 composite material. The method includes the following steps: adding a metal salt solution composed of cobalt and nickel salts to a 2-methylimidazole solution and allowing it to stand for aging to obtain Ni / ZIF-67; calcining the Ni / ZIF-67 to obtain a porous Ni / Co3O4 material; dispersing the porous Ni / Co3O4 material in a Pd(Ac)2 solution, stirring and reacting, and drying to obtain the Pd@Ni / Co3O4 composite material; dispersing the Pd@Ni / Co3O4 composite material and single-walled carbon nanotubes in a solvent to obtain a catalyst slurry; and then coating the catalyst slurry onto the surface of carbon cloth to obtain the anode catalyst layer. This process is simple, low-cost, and suitable for the large-scale preparation of anode catalyst layers for ethanol fuel cells.