Unlock instant, AI-driven research and patent intelligence for your innovation.

Mild hybrid electric vehicles or improvements related thereto

A hybrid electric and vehicle technology, applied in electric vehicles, vehicle components, vehicle energy storage, etc., can solve problems such as ineffective operation of SCR

Active Publication Date: 2020-12-04
FORD GLOBAL TECH LLC
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Below what is commonly referred to as the "light-off" temperature, the SCR does not operate efficiently, which can result in unacceptable levels of some pollutants remaining within the exhaust stream

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Mild hybrid electric vehicles or improvements related thereto
  • Mild hybrid electric vehicles or improvements related thereto
  • Mild hybrid electric vehicles or improvements related thereto

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] exist figure 1 Here, the engine 10 and the 48V electric machine 20 combine to provide all the required functions of a mild hybrid electric vehicle (MHEV). Powered entirely by the engine 10 with energy efficiency derived from regenerative braking provided by the 48V electric motor. The engine 10 is powered by diesel or gasoline, and the 48V motor 20 is powered by a 48V battery 30 . The 48V MHEV battery is a lithium-ion battery with low discharge capability at low temperatures, but it is capable of supporting 12V electrical loads. Engine 10 generates exhaust that is processed by, inter alia, SCR 12 .

[0022] The 12V electrical system 40 includes a 12V battery 42 and a urea delivery system 41. The 12V battery 42 is configured to provide electrical power to various functions within the vehicle, including to form part of the urea delivery system 41 and be provided inside or to the urea tank 46. The electric heater 44 that is in thermal contact with the urea tank 46 provi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A control system for a urea delivery system 41 within a mild-hybride electric vehicle (MHEV). The control system is configured to provide electrical power for the heating of the urea delivery system from the MHEV 48V battery 30. A DC-DC converter 22 may enable power from the 48V battery to be fed into a 12V electrical system 40 which provides heat directly to the urea delivery system. The control system may be operable independently of the vehicle engine 10, such as when the engine is switched off and the vehicle is stationary. Recharging of the 48V battery may commence when the vehicle is started. A vehicle usage prediction module may ensure that the 48V battery is sufficiently charged when a journey is completed to start the following journey effectively based on predictions regarding the next journey. The predictions may include journey length, commencement time, and ambient temperature there at. The heating may be provided by a heated urea tank 46 and / or heated delivery lines 48. The urea may be provided for selective catalytic reduction (SCR) in the engine exhaust system.

Description

technical field [0001] The present invention relates to improvements in or relating to mild hybrid electric vehicles and, in particular, to catalytic reduction devices that facilitate selectivity in mild hybrid electric vehicles (SCR) low temperature performance. Background technique [0002] Emission control regulations require that the exhaust from internal combustion engines be treated before exiting the tailpipe. Typically this treatment includes the reduction of particulate levels and also the switching of SCRs via various undesirable chemicals found especially within the exhaust stream. [0003] The chemical reactions that take place within the SCR have temperature ranges in which they operate efficiently. Below what is commonly referred to as the "light-off" temperature, the SCR does not operate efficiently, which can result in unacceptable levels of some contaminants remaining within the exhaust stream. Therefore, it is desirable for the SCR to reach the "light-of...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F01N3/20
CPCF01N3/2066F01N2240/16F01N2610/02F01N2610/10B60L1/12B60L2240/445B60L2260/54B60L2260/56B60L2260/58B60L58/20F01N3/208F01N2590/11F01N2610/105F01N2900/10F01N2900/104F01N2900/12Y02T10/12Y02T10/70Y02A50/20H02M3/00
Inventor J·瑞特P·G·布里托A·奈杜S·鲁伊斯
Owner FORD GLOBAL TECH LLC