公开(公告)号：US5894828A

公开(公告)日：1999-04-20

申请号：US951373

申请日：1997-10-16

Applicant: Narayanan Sivashankar ,  Jing Sun

Inventor： Narayanan Sivashankar ,  Jing Sun

IPC: F02B75/12 ,  F02D41/14 ,  F02D41/16 ,  F02D41/30 ,  F02M3/00

CPC classification number: F02D41/1406 ,  F02D41/1498 ,  F02D41/16 ,  F02D41/3029 ,  F02B2075/125 ,  F02D2041/389 ,  F02D2200/1015

Abstract: An idle speed control system for a direct injection spark ignition engine controlled to operate in either homogeneous air/fuel modes or stratified air/fuel modes. A desired idle speed is set to optimize fuel economy and avoid rough engine operation during various air/fuel operating modes. During rough idle conditions and non stoichiometric air/fuel operation engine air/fuel is enriched until either rough idle ceases or a rich air/fuel limit is reached. During smooth idle operation, and non stoichiometric air/fuel operation, engine air/fuel is enleaned until either rough idle occurs, a lean air/fuel limit reached, or desired fuel economy attained. After the lean limit is reached, and when operating in a non-stoichiometric non-stratified air/fuel mode, and when not operating at desired fuel economy, ignition timing is advanced until an advance limit is reached and desired idle speed is thereafter decreased.

Abstract translation: 用于直喷式火花点火发动机的怠速控制系统，其被控制为以均匀的空气/燃料模式或分层的空气/燃料模式操作。 设定所需的空转速度以优化燃油经济性，并避免在各种空气/燃料运行模式期间发动机运转粗糙。 在怠速条件和非化学计量的空气/燃料运行的发动机中，空气/燃料被富集，直到怠速停止或达到浓空气/燃料限制。 在平稳的怠速运行和非化学计量的空气/燃料操作期间，发动机空气/燃料被排出，直到发生怠速发生，达到稀薄空气/燃料限制或达到期望的燃料经济性。 在达到稀薄极限之后，并且当以非化学计量的非分层空气/燃料模式运行时，并且当不以期望的燃料经济性运行时，点火正时进行直到达到提前极限，然后降低所需的怠速。

公开(公告)号：US06366847B1

公开(公告)日：2002-04-02

申请号：US09649780

申请日：2000-08-29

Applicant: Jing Sun ,  Narayanan Sivashankar

Inventor： Jing Sun ,  Narayanan Sivashankar

IPC: G06F1578

CPC classification number: F02D41/18 ,  F01P2025/13 ,  F02D2041/389 ,  F02D2200/0404 ,  F02D2200/1004 ,  F02D2200/704

Abstract: A method of continuously estimating barometric pressure values for use in an engine control system. The vehicle includes an manifold absolute pressure (MAP) sensor, ambient air temperature sensor and a throttle position sensor. The method comprises the steps of determining the manifold absolute pressure, ambient air temperature, and throttle position. When the throttle position is at wide-open throttle, the method generates a barometric pressure value ({circumflex over (P)}anew) as a function of the manifold absolute pressure value (P) and previously estimated barometric pressure. Otherwise, the method generates a barometric pressure value as a function of the manifold absolute pressure value (P), and an estimated intake manifold pressure ({circumflex over (P)}) and estimated mass airflow (). In a further embodiment, a mass airflow sensor is also used to generate the estimated barometric pressure value when the engine is not operating at wide-open throttle.

Abstract translation: 一种连续估计用于发动机控制系统的大气压力值的方法。 车辆包括歧管绝对压力（MAP）传感器，环境空气温度传感器和节气门位置传感器。 该方法包括确定歧管绝对压力，环境空气温度和节气门位置的步骤。 当节气门位置处于大开口节气门时，该方法根据歧管绝对压力值（P）和先前估计的气压值产生大气压力值（（（P）}）。 否则，该方法产生作为歧管绝对压力值（P）的函数的大气压力值和估计的进气歧管压力（{回旋（P）}）和估计的质量气流（）。 在另一个实施例中，当发动机不在大开口节气门下操作时，质量气流传感器也用于产生估计的气压值。

公开(公告)号：US5975048A

公开(公告)日：1999-11-02

申请号：US951374

申请日：1997-10-16

Applicant: Narayanan Sivashankar ,  Jing Sun

Inventor： Narayanan Sivashankar ,  Jing Sun

IPC: F02P5/15 ,  F02D31/00 ,  F02D37/02 ,  F02D41/02 ,  F02D41/08 ,  F02D41/16 ,  F02D41/30 ,  F02D43/00 ,  F02M3/00

CPC classification number: F02D37/02 ,  F02D41/08 ,  F02D41/3029 ,  F02D2041/389 ,  F02D31/003 ,  F02D31/008 ,  F02P5/1508

Abstract: An idle speed control system for a direct injection spark ignition engine controlled to operate in either homogeneous air/fuel modes or stratified air/fuel modes. When operating in a stratified air/fuel mode, engine idle speed is controlled by controlling the engine air/fuel during unthrottled operation. When operating stratified and also throttled, engine idle speed is controlled by both controlling air/fuel and controlling the throttle. When operating in the homogeneous modes, engine idle speed is controlled by controlling both the throttle and ignition timing.

Abstract translation: 用于直喷式火花点火发动机的怠速控制系统，其被控制为以均匀的空气/燃料模式或分层的空气/燃料模式操作。 当以分层空气/燃料模式运行时，通过在无节流运行期间控制发动机空气/燃料来控制发动机怠速。 当操作分层并且节流时，发动机怠速通过控制空气/燃料和控制油门控制。 在均匀模式下运行时，通过控制节气门和点火正时来控制发动机怠速。

公开(公告)号：US5947079A

公开(公告)日：1999-09-07

申请号：US93022

申请日：1998-06-08

Applicant: Narayanan Sivashankar ,  Jing Sun

Inventor： Narayanan Sivashankar ,  Jing Sun

IPC: F02D43/00 ,  F02D41/02 ,  F02D41/16 ,  F02D41/30 ,  F02D41/34 ,  F02D45/00 ,  F02B17/00 ,  F02P5/00

CPC classification number: F02D41/16 ,  F02D41/307 ,  F02D2041/389 ,  F02D2250/18 ,  F02D41/3029

Abstract: A mode control system for a direct injection spark ignition engine is controlled to operate in either homogeneous air/fuel modes or stratified air/fuel modes. When transitioning from homogeneous to stratified mode, the throttle is used to adjust manifold pressure to a level where it is possible to operate in a stratified mode with a torque equal to that of the homogeneous model. When transitioning from a stratified to a homogeneous model, the throttle is used to adjust manifold pressure to a level where it is possible to operate in a homogeneous model with a torque equal to that of the stratified mode. During the transition, other engine operating conditions are used to assist in controlling engine torque.

Abstract translation: 用于直喷式火花点火发动机的模式控制系统被控制为以均匀的空气/燃料模式或分层的空气/燃料模式运行。 当从均质模式转换到分层模式时，节流阀用于将歧管压力调节到可以以等于均质模型的转矩的分层模式运行的水平。 当从分层模式转换到均质模型时，节流阀用于将歧管压力调节到可以以等于分层模式的转矩的均匀模型运行的水平。 在过渡期间，使用其他发动机操作条件来帮助控制发动机扭矩。

公开(公告)号：US06390055B1

公开(公告)日：2002-05-21

申请号：US09649779

申请日：2000-08-29

Applicant: Narayanan Sivashankar ,  Jing Sun

Inventor： Narayanan Sivashankar ,  Jing Sun

IPC: F02B1700

CPC classification number: F02D41/3076 ,  F02D41/3029 ,  F02D2200/701 ,  F02D2200/703 ,  F02D2250/18

Abstract: A method of controlling an internal combustion engine is described. The engine is capable of operating in at least two engine operating modes. As an example, the engine can operate in a stratified or a homogeneous combustion mode. The engine operating mode is selected based on a determined atmospheric pressure.

Abstract translation: 描述了一种控制内燃机的方法。 发动机能够在至少两个发动机工作模式下运行。 作为示例，发动机可以以分层或均匀的燃烧模式操作。 基于确定的大气压力来选择发动机工作模式。

公开(公告)号：US5950603A

公开(公告)日：1999-09-14

申请号：US74749

申请日：1998-05-08

Applicant: Jeffrey Arthur Cook ,  Narayanan Sivashankar ,  Jing Sun

Inventor： Jeffrey Arthur Cook ,  Narayanan Sivashankar ,  Jing Sun

IPC: F02P5/15 ,  F02B75/12 ,  F02D41/00 ,  F02D41/02 ,  F02D41/30 ,  F02D41/34 ,  F02D43/00 ,  F02M25/08 ,  F02M37/04

CPC classification number: F02D41/0082 ,  F02D41/0042 ,  F02D41/3029 ,  F02M25/08 ,  F02B2075/125 ,  F02D2041/389 ,  F02D41/3076 ,  Y02T10/123

Abstract: A vapor recovery control system for a direct injection spark ignition engine is used to purge vapors in both a homogeneous air/fuel and stratified air/fuel mode. When purging vapors in a stratified mode, a portion of the cylinders receive purge vapors and operate in a homogeneous mode while the rest of the cylinders continue to operate in a stratified mode.

Abstract translation: 用于直喷式火花点火发动机的蒸气回收控制系统用于清除均匀空气/燃料和分层空气/燃料模式中的蒸气。 当以分层模式吹扫蒸汽时，一部分气缸接收吹扫蒸汽并以均匀模式操作，而其余气缸继续以分层模式运行。