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1.发明授权公开(公告)号：US06748910B2
公开(公告)日：2004-06-15
申请号：US10283756
申请日：2002-10-30
IPC分类号： F01L134
CPC分类号： F02D13/0219 , F02D13/0261 , F02D41/0002 , F02D41/006 , F02D2041/001 , F02D2200/0411 , Y02T10/18 , Y02T10/42
摘要： A cam phase control method for an internal combustion engine schedules cam phase to optimize emissions and fuel economy, but bounds the scheduled cam phase for continuous achievement of the desired inlet airflow. The volumetric efficiency required to achieve the desired inlet airflow at a specified intake manifold vacuum is compared to the maximum achievable volumetric efficiency at the specified vacuum. When the required volumetric efficiency is less than the maximum value, the cam phase is controlled according to the lesser of the scheduled cam phase and the highest cam phase for achieving the required volumetric efficiency; when the required volumetric efficiency is equal to or greater than the maximum value, the cam phase is controlled to a setting that maximizes the volumetric efficiency.
摘要翻译： 用于内燃机的凸轮相位控制方法调度凸轮相位以优化排放和燃料经济性，但限制预定的凸轮相以连续实现期望的入口气流。 将在特定进气歧管真空下实现所需入口气流所需的体积效率与在特定真空下达到的最大容积效率进行比较。 当所需的体积效率小于最大值时，根据预定的凸轮相位和最高凸轮相位中较小的凸轮相位来控制凸轮相位，以实现所需的体积效率; 当所需的体积效率等于或大于最大值时，凸轮相位被控制为最大化容积效率的设定。
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公开(公告)号：US06196203B1
公开(公告)日：2001-03-06
申请号：US09264561
申请日：1999-03-08
IPC分类号： F02M3302
CPC分类号： F02M25/08
摘要： An evaporative emission control system that operates in a running loss mode and an active weathering mode during purge to substantially eliminate running losses during operation of an internal combustion engine. The evaporative emission control system includes a charcoal canister, a canister vent valve, and a purge valve that permits fuel vapors from the canister and engine fuel tank to be purged into the engine's air intake manifold. The running loss mode operates to close the canister vent valve when the gas pressure within the fuel tank increases above a threshold. The vent valve is maintained closed until the fuel tank pressure drops below a lower limit. This prevents running losses by closing the vent when higher pressures are detected that cannot be reduced by purging under the current engine operating conditions. The active weathering mode cycles the canister vent valve open and closed when the volatility of the fuel is determined to be too high for the current ambient temperature. This cycling forces air changes within the fuel tank to accelerate the weathering of the volatile components in the fuel. Fuel volatility is estimated based on tank temperature and fuel vapor concentration. The maximum desired volatility is determined for the ambient temperature and the active weathering mode is begun when the estimated volatility exceeds the maximum desired volatility.
摘要翻译： 一种蒸发排放控制系统，其在清洗期间以运行损耗模式和主动风化模式运行，以在内燃机运行期间基本上消除运行损失。 蒸发排放控制系统包括炭罐，罐排气阀和允许来自罐和发动机燃料箱的燃料蒸气被吹扫到发动机的进气歧管中的净化阀。 当燃料箱内的气体压力增加到阈值以上时，运行损失模式用于关闭罐排气阀。 排气阀保持关闭，直到燃油箱压力下降到下限以下。 通过在当前的发动机工作条件下检测到不能通过吹扫而不能减小的较高压力时，通过关闭排气孔来防止运行损失。 当燃料的挥发性被确定为对于当前环境温度来说太高时，主动风化模式循环罐排气阀打开和关闭。 这种循环使得燃料箱内的空气变化，以加速燃料中挥发性组分的风化。 基于油箱温度和燃料蒸气浓度估算燃料挥发性。 对于环境温度确定最大期望的挥发度，并且当估计的挥发度超过最大期望的挥发度时开始主动风化模式。
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3.发明授权Method of increasing torque and/or reducing emissions by varying the timing of intake and/or exhaust valves 失效通过改变进气和/或排气阀的时间来增加扭矩和/或减少排放的方法公开(公告)号：US06308671B1
公开(公告)日：2001-10-30
申请号：US09658596
申请日：2000-09-11
IPC分类号： F01L134
CPC分类号： F02D41/008 , F01L1/34 , F02D13/0219 , F02D13/0261 , F02D41/0002 , F02D2041/001 , F02D2200/0411 , F02D2200/703 , F02D2250/18 , Y02T10/18 , Y02T10/42
摘要： A method of improving the operating characteristics of an internal combustion engine equipped with electronic throttle control employs variable cam timing to vary the phasing of the intake valves and/or exhaust valves so as to achieve lower feed gas emissions and improved fuel economy while delivering as closely as possible the desired torque. The method can be implemented using a fuel-lead strategy or an air-lead strategy. Whenever a change is requested in the amount of torque, the method responds by adjusting the amount of fuel flow, the spark timing, the position of the throttle and/or the positions of the intake valves and/or the exhaust valves so as to deliver the desired torque. The method adjusts those operating parameters in a way that improves the ability of the engine to deliver the desired torque, produce less feed gas emissions, idle more stably, and consume less fuel.
摘要翻译： 一种改进配备有电子节气门控制的内燃机的操作特性的方法采用可变凸轮正时来改变进气门和/或排气门的定相，从而实现较低的进料气体排放和改善的燃料经济性，同时紧密地传送 尽可能地希望的扭矩。 该方法可以使用燃料引导策略或空中牵引策略来实现。 每当需要改变扭矩量时，该方法通过调节燃料流量，火花正时，节气门位置和/或进气门和/或排气门的位置来进行响应，以便输送 所需扭矩。 该方法以提高发动机提供所需扭矩，产生较少进料气体排放，更稳定怠速和消耗较少燃料的能力的方式调整这些操作参数。
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公开(公告)号：US06321735B2
公开(公告)日：2001-11-27
申请号：US09264524
申请日：1999-03-08
IPC分类号： F02D4114
CPC分类号： F02M25/08 , F02D41/0042 , F02D41/0045 , F02D41/047 , F02D41/1402 , F02D41/2451 , F02D2041/1409
摘要： A fuel control system that estimates the fuel quantity received from purging of an evaporative emission control system and then accounts for the purge fuel in determining the amount of fuel to be injected into a cylinder of an internal combustion engine. Purge fuel quantity is represented by a purge equivalence ratio which is computed based upon an estimate of the hydrocarbon concentration in the purge gas. The hydrocarbon concentration is adaptively learned using an iterative routine that updates the estimate based on the integrated error between the actual and desired air/fuel ratios. Wall wetting and closed loop corrections are applied only to the non-purge fuel portion of the total fuel delivered to the engine cylinder. The closed loop control includes a block learn memory that provides a correction to the factory fuel calibration. The hydrocarbon concentration is updated using the integrated error during purging, whereas the block learn memory is updated using the integrated error during periods when no purging is occurs. The evaporative emission control system includes a solenoid-operated purge valve that is controlled in a manner that provides improved fuel control during transient conditions. The solenoid duty cycle is controlled using a purge factor that operates to reduce the duty cycle when the intake airflow rate drops significantly.
摘要翻译： 一种燃料控制系统，其估计从蒸发排放控制系统清除接收到的燃料量，然后考虑清除燃料以确定要喷射到内燃机的气缸中的燃料量。 清洗燃料量由清洗当量比表示，其基于净化气体中的烃浓度的估计计算。 使用基于实际和期望的空气/燃料比之间的积分误差更新估计值的迭代程序自适应地学习碳氢化合物浓度。 壁润湿和闭环校正仅应用于输送到发动机气缸的总燃料的非清除燃料部分。 闭环控制包括块学习存储器，其提供对工厂燃料校准的校正。 在净化期间使用积分误差来更新碳氢化合物浓度，而在不发生净化的时段期间使用积分误差来更新块学习存储器。 蒸发排放控制系统包括电磁操作的净化阀，其以在瞬态条件下提供改进的燃料控制的方式进行控制。 使用吹扫因子来控制螺线管占空比，当吸入气流速率显着下降时，该系数用于减少占空比。
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5.发明授权公开(公告)号：US07024301B1
公开(公告)日：2006-04-04
申请号：US11036212
申请日：2005-01-14
IPC分类号： F02D41/14
CPC分类号： F02D41/40 , F02D35/025 , F02D41/1446 , F02D2041/2065 , F02D2200/0606 , Y02T10/44
摘要： A system and method for controlling fuel delivery through a fuel injection system to an internal combustion engine is described. An engine controller calculates a mass of fuel for delivery to one of the cylinders through one of the fuel injectors, based upon the operation of the internal combustion engine. Gas temperature in the intake runner of the cylinder is determined, and a compensation term is selected based upon the calculated mass of fuel and the determined gas temperature in the intake runner of the cylinder. The calculated mass of fuel is adjusted using the compensation term, and the controller controls open time of the fuel injector based upon the adjusted calculated mass of fuel.
摘要翻译： 描述了一种用于控制通过燃料喷射系统到内燃机的燃料输送的系统和方法。 发动机控制器基于内燃机的操作，计算通过燃料喷射器之一输送到其中一个气缸的燃料质量。 确定气缸的进气流道中的气体温度，并且基于计算的燃料质量和气缸的进气流道中确定的气体温度来选择补偿项。 使用补偿项调节计算出的燃料质量，并且控制器基于调整后的计算出的燃料质量来控制燃料喷射器的打开时间。
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