公开(公告)号：US10450940B2

公开(公告)日：2019-10-22

申请号：US15493640

申请日：2017-04-21

Applicant: GM Global Technology Operations LLC

Inventor： Luca Scavone ,  Luigi Russiello ,  Andrea Lorena Torres Cuadros ,  Andrei Gheorghi Kanev

IPC: F01P7/16 ,  F01P3/02 ,  F01P7/14

Abstract: A coolant control system of a vehicle includes an opening module configured to determine a coolant valve (CV) opening, a flow control valve (FCV) opening, and a block valve (BV) opening based on at least one of a block temperature difference, a head temperature difference, and a coolant outlet temperature difference. A CV control module is configured to selectively actuate a CV based on the CV opening. The CV regulates coolant flow from the FCV to a radiator and a coolant channel bypassing the radiator. A BV control module is configured to selectively actuate a BV based on the BV opening. The BV regulates coolant flow from the engine block to the FCV. A FCV control module is configured to selectively actuate a FCV based on the FCV opening. The FCV regulates coolant flow from the cylinder head and the BV to the CV.

公开(公告)号：US10107177B1

公开(公告)日：2018-10-23

申请号：US15653124

申请日：2017-07-18

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Sami Ahmed ,  Luca Scavone

IPC: F01P7/16 ,  F01P3/02 ,  F01P3/20 ,  F01P5/10 ,  F01P11/16 ,  F02M26/22 ,  F02M35/10 ,  F02B39/00 ,  F01P7/14

Abstract: An active thermal management system for a vehicle and a method of operating the system are provided. The active thermal management system may include, but is not limited to, an exhaust gas temperature sensor, an engine metal temperature sensor, an engine coolant output temperature sensor, an engine oil temperature sensor, a cooling system, and a controller, the controller configured to determine when the vehicle is in a tow/haul mode, operate the cooling system when at least one of the temperature of the exhaust gas, the engine metal, the coolant output from the engine and the temperature of the engine oil is greater than a predetermined temperature, and operate the cooling system to bypass a radiator when all of the temperature of the exhaust gas, the engine metal, the temperature of the coolant, and the temperature of the engine oil is lower than a predetermined low temperature.

公开(公告)号：US09644545B2

公开(公告)日：2017-05-09

申请号：US14695656

申请日：2015-04-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Chad E. Marlett ,  Luca Scavone ,  Francesco Cianflone

IPC: F02D9/06 ,  F02D9/04 ,  F02D9/08 ,  F02B37/24

CPC classification number: F02D9/06 ,  F02B37/24 ,  F02D9/08

Abstract: A method of controlling exhaust braking in an internal combustion engine is disclosed. The engine includes an exhaust system, an exhaust pressure modulation valve, and a variable geometry turbocharger having adjustable vanes. The method includes restricting a flow of the exhaust gas through the exhaust system via a first partially-closed position of the valve. The valve's first partially-closed position increases the exhaust backpressure in the engine up to a first pressure value and generates a first stage of exhaust braking by the engine. The method also includes, following the increase of exhaust backpressure in the engine up to the first pressure value, restricting a flow of the exhaust gas through the turbocharger via closing the turbocharger's adjustable vanes. The closing of the turbocharger's adjustable vanes increases the exhaust backpressure up to a second pressure value in the exhaust system and generates a second stage of exhaust braking by the engine.

公开(公告)号：US20160312712A1

公开(公告)日：2016-10-27

申请号：US14695656

申请日：2015-04-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Chad E. Marlett ,  Luca Scavone ,  Francesco Cianflone

IPC: F02D9/06 ,  F02D41/00 ,  F02B37/24 ,  F02D9/08

CPC classification number: F02D9/06 ,  F02B37/24 ,  F02D9/08

Abstract: A method of controlling exhaust braking in an internal combustion engine is disclosed. The engine includes an exhaust system, an exhaust pressure modulation valve, and a variable geometry turbocharger having adjustable vanes. The method includes restricting a flow of the exhaust gas through the exhaust system via a first partially-closed position of the valve. The valve's first partially-closed position increases the exhaust backpressure in the engine up to a first pressure value and generates a first stage of exhaust braking by the engine. The method also includes, following the increase of exhaust backpressure in the engine up to the first pressure value, restricting a flow of the exhaust gas through the turbocharger via closing the turbocharger's adjustable vanes. The closing of the turbocharger's adjustable vanes increases the exhaust backpressure up to a second pressure value in the exhaust system and generates a second stage of exhaust braking by the engine.

Abstract translation: 公开了一种控制内燃机排气制动的方法。 发动机包括排气系统，排气压力调节阀和具有可调叶片的可变几何涡轮增压器。 该方法包括经由阀的第一部分关闭位置限制废气流经排气系统的流动。 阀的第一部分闭合位置使发动机中的排气背压增加到第一压力值，并且通过发动机产生排气制动的第一级。 该方法还包括随着发动机中的排气背压增加到第一压力值，通过关闭涡轮增压器的可调节叶片来限制废气通过涡轮增压器的流动。 涡轮增压器的可调节叶片的关闭将排气背压增加到排气系统中的第二压力值，并且由发动机产生排气制动的第二阶段。

公开(公告)号：US09175617B2

公开(公告)日：2015-11-03

申请号：US13961942

申请日：2013-08-08

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Luca Scavone ,  Simone Barbero ,  Francesco Castorina ,  Francesco Cianflone ,  Andrea Di Giovanni ,  Andrea De Vito

IPC: F02B37/24 ,  F02D31/00 ,  F02D41/12 ,  F02D41/14 ,  F02D41/00

CPC classification number: F02D31/001 ,  F02B37/24 ,  F02D41/0005 ,  F02D41/0007 ,  F02D41/12 ,  F02D41/1446 ,  F02D41/1448 ,  F02D41/145 ,  F02D2041/1433 ,  Y02T10/144 ,  Y02T10/42

Abstract: A system and method can control exhaust braking in a vehicle. The vehicle includes an engine system. The engine system includes internal combustion engine, an intake manifold, a control module, an exhaust system, and a variable geometry turbocharger (VGT) having a turbine. The turbine includes turbine blades and vanes movable with respect to the turbine blades. The method includes the following: (a) receiving an exhaust brake torque request; (b) determining target pumping losses in the internal combustion engine based on the exhaust brake torque request; (c) determining a target exhaust gas pressure within the exhaust system based on the target pumping losses; and (d) determining a target vane position of the vanes based on the target exhaust gas pressure, wherein the target vane position yields an exhaust brake torque in accordance with the exhaust brake torque request.

Abstract translation: 一种系统和方法可以控制车辆中的排气制动。 车辆包括发动机系统。 发动机系统包括具有涡轮机的内燃机，进气歧管，控制模块，排气系统和可变几何涡轮增压器（VGT）。 涡轮机包括相对于涡轮叶片可移动的涡轮叶片和叶片。 该方法包括以下步骤：（a）接收排气制动转矩请求; （b）基于所述排气制动转矩要求确定所述内燃机中的目标泵送损失; （c）基于目标泵送损失来确定排气系统内的目标废气压力; 以及（d）基于所述目标排气压力确定所述叶片的目标叶片位置，其中所述目标叶片位置根据所述排气制动转矩请求产生排气制动转矩。