公开(公告)号：US11643983B2

公开(公告)日：2023-05-09

申请号：US17574057

申请日：2022-01-12

Applicant: Massachusetts Institute Of Technology

Inventor： Daniel R. Cohn ,  Leslie Bromberg

IPC: F02D19/12 ,  B60W10/06 ,  B60W10/10 ,  F02D19/06 ,  B60K6/24 ,  B60K6/46 ,  B60W10/08 ,  B60W10/26 ,  B60W30/188 ,  F02B19/12 ,  F02D15/00 ,  F02D19/08 ,  F02D29/02 ,  F02D41/00 ,  F02M25/025 ,  F02N11/08

CPC classification number: F02D19/0615 ,  B60K6/24 ,  B60K6/46 ,  B60W10/06 ,  B60W10/08 ,  B60W10/10 ,  B60W10/26 ,  B60W30/188 ,  F02B19/12 ,  F02D15/00 ,  F02D19/0655 ,  F02D19/08 ,  F02D19/12 ,  F02D29/02 ,  F02D41/0025 ,  F02M25/025 ,  F02N11/0862 ,  B60W2510/0638 ,  B60W2510/0666 ,  B60W2510/08 ,  B60W2520/28 ,  B60W2710/06 ,  B60W2710/0616 ,  B60W2710/0644 ,  B60W2710/0677 ,  B60W2710/1005 ,  B60W2710/242 ,  B60Y2200/92

Abstract: Spark ignition engine operation at higher RPM so as to reduce alcohol requirements in high efficiency alcohol enhanced gasoline engines is disclosed. Control of engine upspeeding (use of a higher ratio of engine RPM to wheel RPM) so as to achieve an alcohol reduction objective while limiting any decrease in efficiency is described. High RPM alcohol enhanced gasoline engine operation in plug-in series hybrid powertrains for heavy duty trucks and other vehicles is also described.

公开(公告)号：US20190309697A1

公开(公告)日：2019-10-10

申请号：US16424471

申请日：2019-05-28

Applicant: Massachusetts Institute of Technology

Inventor： Daniel R. Cohn ,  John B. Heywood ,  Leslie Bromberg

IPC: F02D41/00 ,  F02P5/04 ,  F02M25/00 ,  F02B51/00 ,  F02M25/14 ,  F02D41/30 ,  F02D35/02 ,  F02B17/00 ,  F02D19/08 ,  F02B47/04 ,  F02B47/00 ,  F02B7/00

Abstract: Fuel management system for efficient operation of a spark ignition gasoline engine. Injectors inject an anti-knock agent such as ethanol directly into a cylinder of the engine. A fuel management microprocessor system controls injection of the anti-knock agent so as to control knock and minimize that amount of the anti-knock agent that is used in a drive cycle. It is preferred that the anti-knock agent is ethanol. The use of ethanol can be further minimized by injection in a non-uniform manner within a cylinder. The ethanol injection suppresses knock so that higher compression ratio and/or engine downsizing from increased turbocharging or supercharging can be used to increase the efficiency or the engine.

公开(公告)号：US08997711B2

公开(公告)日：2015-04-07

申请号：US14133974

申请日：2013-12-19

Applicant: Massachusetts Institute of Technology

Inventor： Daniel R. Cohn ,  Leslie Bromberg ,  John B. Heywood

IPC: F02D41/30 ,  F02D19/00 ,  F02B47/04 ,  F02B51/00 ,  F02D41/00 ,  F02M25/14 ,  F02D19/08 ,  F02B17/00 ,  F02B7/00 ,  F02B47/00 ,  F02M25/00

CPC classification number: F02D41/0025 ,  F02B7/00 ,  F02B17/00 ,  F02B17/005 ,  F02B47/00 ,  F02B47/04 ,  F02B51/00 ,  F02D19/08 ,  F02D19/081 ,  F02D35/027 ,  F02D41/3094 ,  F02D2041/389 ,  F02D2200/1002 ,  F02M25/00 ,  F02M25/14 ,  F02P5/045 ,  Y02T10/148

Abstract: Fuel management system for efficient operation of a spark ignition gasoline engine. Injectors inject an anti-knock agent such as ethanol directly into a cylinder of the engine. A fuel management microprocessor system controls injection of the anti-knock agent so as to control knock and minimize that amount of the anti-knock agent that is used in a drive cycle. It is preferred that the anti-knock agent is ethanol. The use of ethanol can be further minimized by injection in a non-uniform manner within a cylinder. The ethanol injection suppresses knock so that higher compression ratio and/or engine downsizing from increased turbocharging or supercharging can be used to increase the efficiency or the engine.

Abstract translation: 燃油管理系统，用于火花点火汽油机的高效运行。 注射器将诸如乙醇的抗爆剂直接注入发动机气缸。 燃料管理微处理器系统控制防爆剂的注射，以便控制爆震并使在驱动循环中使用的抗爆剂的量最小化。 抗爆剂优选为乙醇。 可以通过在气缸内以非均匀的方式注入来进一步使乙醇的使用最小化。 乙醇注入抑制爆震，从而可以使用增加涡轮增压或增压的较高的压缩比和/或发动机的小型化来提高效率或发动机。

公开(公告)号：US08733321B2

公开(公告)日：2014-05-27

申请号：US13956498

申请日：2013-08-01

Applicant: Massachusetts Institute of Technology

Inventor： Daniel R. Cohn ,  John B. Heywood ,  Leslie Bromberg

IPC: F02M25/14 ,  F02B47/00

CPC classification number: F02D41/0025 ,  F02B7/00 ,  F02B17/00 ,  F02B17/005 ,  F02B47/00 ,  F02B47/04 ,  F02B51/00 ,  F02D19/08 ,  F02D19/081 ,  F02D35/027 ,  F02D41/3094 ,  F02D2041/389 ,  F02D2200/1002 ,  F02M25/00 ,  F02M25/14 ,  F02P5/045 ,  Y02T10/148

Abstract: Fuel management system for efficient operation of a spark ignition gasoline engine. Injectors inject an anti-knock agent such as ethanol directly into a cylinder of the engine. A fuel management microprocessor system controls injection of the anti-knock agent so as to control knock and minimize that amount of the anti-knock agent that is used in a drive cycle. It is preferred that the anti-knock agent is ethanol. The use of ethanol can be further minimized by injection in a non-uniform manner within a cylinder. The ethanol injection suppresses knock so that higher compression ratio and/or engine downsizing from increased turbocharging or supercharging can be used to increase the efficiency of the engine.

公开(公告)号：US20140034002A1

公开(公告)日：2014-02-06

申请号：US13952766

申请日：2013-07-29

Applicant: Massachusetts Institute of Technology

Inventor： Leslie Bromberg ,  Daniel R. Cohn

IPC: F02M25/00

CPC classification number: F02M25/00 ,  F01K23/065 ,  F01N5/02 ,  F02D19/0644 ,  F02D19/0655 ,  F02D19/0671 ,  F02D41/0025 ,  F02D41/0027 ,  F02M21/0209 ,  F02M25/12 ,  Y02T10/16 ,  Y02T10/36

Abstract: Engine system using alcohol Rankine heat recovery where the engine heat converts alcohol into hydrogen-rich gas which is then introduced into the engine cylinders. The engine system includes a source of liquid alcohol along with an internal combustion engine generating a high-temperature exhaust. Structure is provided for introducing a first portion of the liquid alcohol into the engine and a series of heat exchangers forming a Rankine heat recovery cycle is provided to extract heat from the exhaust and transferring the heat to a second portion of the liquid alcohol, causing it to change phase to a gaseous alcohol. A heat exchanger/catalyst is heated by the exhaust to reform the gaseous alcohol into a hydrogen-rich reformate. Valve structure rapidly introduces the reformate into the engine for combustion and a control system is provided for controlling the ratio of the first and second portions of the liquid alcohol to maximize the amount of the second portion of the liquid alcohol while using a minimum amount of the first portion needed to prevent knock. The heat recovery system uses metallic foams on fins heat exchangers.

Abstract translation: 发动机系统使用酒精兰金热回收，其中发动机将酒精转化为富氢气体，然后将其引入发动机气缸。 发动机系统包括液态醇源以及产生高温排气的内燃机。 提供用于将液态醇的第一部分引入发动机的结构，并且提供形成兰金热回收循环的一系列热交换器以从排气中提取热量并将热量传递到液态醇的第二部分，从而使其 将相变为气态酒精。 热交换器/催化剂被排气加热以将气态醇重整成富氢重整产物。 阀结构将重整产品快速引入燃烧用发动机，并提供控制系统以控制液体醇的第一和第二部分的比例，以使液体酒精的第二部分的量最大化，同时使用最小量的 第一部分需要防止爆震。 热回收系统在翅片热交换器上使用金属泡沫。

公开(公告)号：US20220034272A1

公开(公告)日：2022-02-03

申请号：US17500322

申请日：2021-10-13

Applicant: Massachusetts Institute of Technology

Inventor： Leslie Bromberg ,  Daniel R. Cohn ,  John B. Heywood

IPC: F02D41/00 ,  F02B47/04 ,  F02B51/00 ,  F02D19/08 ,  F02D19/12 ,  F02D35/02 ,  F02M25/14 ,  F02M37/00 ,  F02D19/06 ,  F02B17/00 ,  F02D13/02 ,  F02D41/04 ,  F02D41/30

Abstract: Fuel management system for enhanced operation of a spark ignition gasoline engine. Injectors inject an anti-knock agent such as ethanol directly into a cylinder. It is preferred that the direct injection occur after the inlet valve is closed. It is also preferred that stoichiometric operation with a three way catalyst be used to minimize emissions. In addition, it is also preferred that the anti-knock agents have a heat of vaporization per unit of combustion energy that is at least three times that of gasoline.

公开(公告)号：US20210254568A1

公开(公告)日：2021-08-19

申请号：US17246578

申请日：2021-04-30

Applicant: Massachusetts Institute of Technology

Inventor： Leslie Bromberg ,  Daniel R. Cohn ,  John B. Heywood

IPC: F02D41/00 ,  F02B47/04 ,  F02B51/00 ,  F02D19/08 ,  F02D19/12 ,  F02D35/02 ,  F02M25/14 ,  F02M37/00 ,  F02D19/06 ,  F02B17/00 ,  F02D13/02 ,  F02D41/04 ,  F02D41/30

Abstract: Fuel management system for enhanced operation of a spark ignition gasoline engine. Injectors inject an anti-knock agent such as ethanol directly into a cylinder. It is preferred that the direct injection occur after the inlet valve is closed. It is also preferred that stoichiometric operation with a three way catalyst be used to minimize emissions. In addition, it is also preferred that the anti-knock agents have a heat of vaporization per unit of combustion energy that is at least three times that of gasoline.

公开(公告)号：US20200300186A1

公开(公告)日：2020-09-24

申请号：US16896904

申请日：2020-06-09

Applicant: Massachusetts Institute of Technology

Inventor： Daniel R. Cohn ,  John B. Heywood ,  Leslie Bromberg

IPC: F02D41/00 ,  F02B51/00 ,  F02B47/04 ,  F02M25/14 ,  F02D19/08 ,  F02B17/00 ,  F02B7/00 ,  F02B47/00 ,  F02M25/00 ,  F02D35/02 ,  F02D41/30 ,  F02P5/04

Abstract: Fuel management system for efficient operation of a spark ignition gasoline engine. Injectors inject an anti-knock agent such as ethanol directly into a cylinder of the engine. A fuel management microprocessor system controls injection of the anti-knock agent so as to control knock and minimize that amount of the anti-knock agent that is used in a drive cycle. It is preferred that the anti-knock agent is ethanol. The use of ethanol can be further minimized by injection in a non-uniform manner within a cylinder. The ethanol injection suppresses knock so that higher compression ratio and/or engine downsizing from increased turbocharging or supercharging can be used to increase the efficiency or the engine.

公开(公告)号：US10746110B2

公开(公告)日：2020-08-18

申请号：US16251658

申请日：2019-01-18

Applicant: Massachusetts Institute of Technology

Inventor： Leslie Bromberg ,  Daniel R. Cohn ,  John B. Heywood

IPC: F02D19/08 ,  F02D35/00 ,  F02D41/00 ,  F02B47/04 ,  F02B51/00 ,  F02D13/02 ,  F02D19/06 ,  F02D19/12 ,  F02D35/02 ,  F02D41/04 ,  F02D41/30 ,  F02M25/14 ,  F02M37/00 ,  F02B17/00

Abstract: Fuel management system for enhanced operation of a spark ignition gasoline engine. Injectors inject an anti-knock agent such as ethanol directly into a cylinder. It is preferred that the direct injection occur after the inlet valve is closed. It is also preferred that stoichiometric operation with a three way catalyst be used to minimize emissions. In addition, it is also preferred that the anti-knock agents have a heat of vaporization per unit of combustion energy that is at least three times that of gasoline.

公开(公告)号：US20200224597A1

公开(公告)日：2020-07-16

申请号：US16831044

申请日：2020-03-26

Applicant: Massachusetts Institute of Technology

Inventor： Leslie Bromberg ,  Daniel R. Cohn ,  John B. Heywood

IPC: F02D41/00 ,  F02B47/04 ,  F02B51/00 ,  F02D19/08 ,  F02D19/12 ,  F02D35/02 ,  F02M25/14 ,  F02M37/00 ,  F02D19/06 ,  F02B17/00 ,  F02D13/02 ,  F02D41/04 ,  F02D41/30

Abstract: Fuel management system for enhanced operation of a spark ignition gasoline engine. Injectors inject an anti-knock agent such as ethanol directly into a cylinder. It is preferred that the direct injection occur after the inlet valve is closed. It is also preferred that stoichiometric operation with a three way catalyst be used to minimize emissions. In addition, it is also preferred that the anti-knock agents have a heat of vaporization per unit of combustion energy that is at least three times that of gasoline.