摘要:
A return fuel cooling system for LPI vehicle having an engine and a bombe connected to each other through a fuel supply line and a fuel return line in the LPI vehicle using LPG fuel to cool high-temperature LPG fuel returning from the engine to the bombe, may include a heat exchanger mounted on the fuel return line, a bypass line connecting upstream and downstream of the fuel return line, wherein the heat exchanger may be interposed between the upstream and the downstream of the fuel return line to make the LPG fuel returning to the bombe bypass the heat exchanger and supply the LPG fuel to the bombe, and a valve included at a portion in which the fuel return line and the bypass line is connected, and selectively opening or closing the fuel return line connected with the heat exchanger according to a temperature of the bombe.
摘要:
An agricultural vehicle including an exhaust system. The exhaust system also includes a dosing module having a fluid inlet and a fluid outlet. Additionally, the exhaust system includes a first conduit coupled directly between the fluid inlet and an engine cooling system of the agricultural vehicle. The first conduit is configured to hold a cooling fluid. The exhaust system also includes a second conduit coupled directly between the fluid outlet and the engine cooling system and is configured to hold the cooling fluid. The cooling fluid is configured to flow from the first and second conduits into the engine cooling system after an engine of the agricultural vehicle is turned off
摘要:
A return fuel cooling system for LPI vehicle having an engine and a bombe connected to each other through a fuel supply line and a fuel return line in the LPI vehicle using LPG fuel to cool high-temperature LPG fuel returning from the engine to the bombe, may include a heat exchanger mounted on the fuel return line, a bypass line connecting upstream and downstream of the fuel return line, wherein the heat exchanger may be interposed between the upstream and the downstream of the fuel return line to make the LPG fuel returning to the bombe bypass the heat exchanger and supply the LPG fuel to the bombe, and a valve included at a portion in which the fuel return line and the bypass line is connected, and selectively opening or closing the fuel return line connected with the heat exchanger according to a temperature of the bombe.
摘要:
A unit for cooling an internal combustion engine, including: a crankcase exchanger configured to allow for a flow of a crankcase coolant, a main radiator, an additional radiator, and a cooling circuit configured to convey the coolant between the exchanger of the crankcase and the radiators. The unit includes a burnt gas exchanger including a burnt gas pipe and a coolant pipe, the burnt gas exchanger configured to convey the coolant and to perform a heat exchange between the burnt gases and the coolant. In addition, the cooling circuit is configured to convey the coolant between the burnt gas exchanger and the main and additional radiators.
摘要:
A method of assessing the functioning of an EGR cooler of an EGR system in an internal combustion engine, wherein the EGR cooler can be selectively operated in a first and a second operating condition; and wherein the engine comprises at least one cylinder equipped with a pressure sensor. The assessment of the functioning of the EGR cooler is based on the variation of a combustion characteristic value depending on cylinder pressure (CA50), upon switching of the EGR cooler from a first to a second operating condition.
摘要:
A high-altitude aircraft powerplant including an engine, a two-stage turbocharger having an intercooler and an aftercooler, a cryogenic hydrogen fuel source, and a cooling system including a hydrogen heat exchanger. Aided by a ram-air cooler that cools a coolant to a near-ambient temperature, the heat exchanger is configured to heat the hydrogen using the coolant, and to cool the coolant to a temperature well below the ambient temperature during high-altitude flight. The intercooler and aftercooler use the sub-ambient temperature coolant, as does a separate sensor. The ram-air cooler includes a front portion and a rear portion. The cooling system includes three cooling loops which respectively incorporate only the front portion, only the rear portion, and both portions of the ram-air cooler.
摘要:
A fuel circulation system for a dimethyl-ether fuel vehicle may include a fuel tank storing a fuel, a fuel supply line connected to the fuel tank, a fuel supply pump disposed in the fuel supply line and supplying the fuel to a fuel injection system under pressure, a common rail maintaining the pressure of the fuel pressurized from the fuel supply pump, the fuel injection system injecting the fuel supplied from the common rail, a fuel return line fluid-communicating with and diverging from the fuel injection system and/or the common rail to collect remaining fuel of the fuel, and a fuel cooling system disposed on the fuel return line such that a return fuel returned from the fuel injection system and/or the common rail passes therethrough, wherein the fuel cooling system may be disposed close to a heater core to exchange a heat of the return fuel.
摘要:
An onboard cooling system diagnostic strategy utilizes at least one temperature sensor fluidly positioned between an electronically controlled engine and a thermostat. The diagnostic algorithm operates by monitoring coolant temperature during engine startup. By comparing the actual coolant temperature during engine start-up to a predicted coolant temperature that should occur if no cooling system error is present, a cooling system fault condition may be identified. If a cooling system fault is detected, the diagnostic logic may activate the engine cooling fan or intrusively open an electrically controlled thermostat while monitoring the coolant temperature response to the intrusive action. If there is a substantial change in coolant temperature responsive to the intrusive action, this phenomenon can be utilized to correctly distinguish between a thermostat failure and a vehicle configuration error corresponding to an overcooled vehicle. The present disclosure also can utilize a similar strategy to diagnose problems associated with other vehicle fluid coolers that exchange heat with ambient air moved by a circulation fan.
摘要:
A high-altitude aircraft powerplant including an engine, a two-stage turbocharger having an intercooler and an aftercooler, a cryogenic hydrogen fuel source, and a cooling system including a hydrogen heat exchanger. Aided by a ram-air cooler that cools a coolant to a near-ambient temperature, the heat exchanger is configured to heat the hydrogen using the coolant, and to cool the coolant to a temperature well below the ambient temperature during high-altitude flight. The intercooler and aftercooler use the sub-ambient temperature coolant, as does a separate sensor. The ram-air cooler includes a front portion and a rear portion. The cooling system includes three cooling loops which respectively incorporate only the front portion, only the rear portion, and both portions of the ram-air cooler.
摘要:
A locomotive diesel engine emissions control suite includes retarding fuel injection timing and heating the diesel fuel. Switch locomotives are now required to comply with USEPA emission standards under 40 CFR Part 1033 regulations. Retarding the fuel injection timing reduces peak temperatures during combustion which in turn reduces production of Nitrogen oxides (NOx) but also increases emissions of particulate matter (PM), Carbon Monoxide (CO), and Hydrocarbons (HC) in the exhaust. Unrelated efforts to reduce the smoke in diesel exhaust by pre-heating the diesel fuel showed an unexpected reduction in PM, CO, and HC. Such heating of the diesel fuel did not affect the reduction in NOx but reduced emissions of PM, CO, and HC to acceptable levels. Further experiments showed that two degrees of fuel injection retarding and fuel heated to 120 to 140 degrees Fahrenheit resulted in meeting the 40 CFR Part 1033 regulations.
摘要翻译:机车柴油机排放控制套件包括延迟燃油喷射正时和加热柴油。 开关机车现在需要符合40 CFR Part 1033规定中的USEPA排放标准。 燃料喷射时间的延迟降低了燃烧期间的峰值温度,从而降低了氮氧化物(NOx)的产生,同时也增加了废气中颗粒物质(一氧化碳)和一氧化碳(HC)的排放。 通过预热柴油燃料来减少柴油机排气烟雾的不相关努力显示出PM,CO和HC意外减少。 柴油的这种加热不会影响NOx的减少,而是将PM,CO和HC的排放减少到可接受的水平。 进一步的实验表明,两度燃料喷射阻燃和燃料加热到120华氏度至140华氏度,导致符合40 CFR Part 1033规定。