elphi Automotive engineers are outlining innovative solutions to the emissions challenges facing each gasoline and diesel vehicles in technical papers presented at the twenty first Aachen Colloquium held Oct. 8 to 10 in.
The Aachen Colloquium "Automobile and Engine Technology" has become the most important automotive and engine technology congress in Europe, and there Delphi, a major automotive supplier, has shown technical papers describing its close to production-ready Selective Catalytic Reduction (SCR) dosing system. This system provides what the corporate describes as a uniquely price-effective approach to urea injection.
Delphi’s papers can conjointly describe a Gasoline Direct Injection Compression Ignition (GDCI) engine that's currently in advanced development.
The papers are complemented by intensive hardware displays at the Delphi booth that embody a range of latest, light-weight power electronics merchandise for hybrid and electrical vehicles.
The 1st paper is titled “Delphi SCR Dosing System: An different approach for shut-coupled SCR catalyst systems.”
It explains how a brand new high-pressure water cooled urea doser simplifies the dosing system architecture compared to conventional approaches and how it is appropriate to be used on shut-coupled SCR exhaust systems #151; where the SCR catalyst is placed closer to the engine for faster light-off.
"The doser generates an outstanding spray quality enabling high levels of NOx conversion, even at low exhaust temperatures," explained David Needham, Delphi's chief engineer on the SCR system. "The innovative arrangement provides a straightforward and strong resolution for NOx reduction to meet Euro 6 Step a pair of emissions regulations, and to minimize CO2 emissions without the value and package increases normally associated with further aftertreatment."
The Delphi SCR system, that is suitable for passenger cars and light business vehicle applications, is complemented by a replacement ammonia sensor. SCR catalyst systems turn out ammonia so as to cut back NOx emissions.
Delphi-SCR-Dosing-system-schematic
According to Delphi, measuring ammonia with this sensor provides glorious feedback for precise urea dosing management, and offers an indication for on-board diagnostics (OBD) and monitoring of the SCR system. The first production application of Delphi's SCR dosing system is scheduled for 2015.
Gasoline direct injection compression ignition (GDCI)
Delphi's second paper, titled "Combustion System for Gasoline Direct Injection Compression Ignition (GDCI)" describes Delphi's work on a utterly new approach to combustion that delivers a mixture of low fuel consumption and low exhaust emissions.
"GDCI uses precise gasoline injection to enable well-timed and controlled compression ignition for prime potency with low combustion noise," said Harry Husted, chief engineer, Advanced Powertrain.
New two-stage diesel injector jointly demonstrated by Daimler and Delphi
A third paper, presented by Daimler AG, details the joint Daimler-Delphi development of a combustion system using a new prototype 2-stage diesel injector from Delphi.
According to the paper, the injector uses a replacement variable orifice nozzle (VON) concept to reduce the conflict between reduced emissions, increased power output and lower combustion noise. The additional control of fuel flow, made doable by the VON, permits bigger optimization of diesel combustion and has already shown improved half-load fuel economy with lower noise and smoke levels.
Delphi is also showcasing what it dubs as a vary of innovative power electronics merchandise, together with Delphi's high-performance inverter, DC/DC converter, on-board battery charger, battery management system and hybrid vehicle control unit.
Delphi says its high-performance inverter uses patented power silicon packaging to scale back value, size and weight whereas increasing overall reliability. The distinctive packaging eliminates wire bonds, allows higher current and power density, and when combined with twin-facet cooling, reduces power semiconductor area. The inverter is anticipated to start production in 2013.
Delphi conjointly stated its battery pack controller calculates state-of-charge, evaluates battery health and determines power out there for the vehicle. Using these calculations, it performs cell balancing to maintain cell safety and increase battery life. Delphi's battery pack controller is scalable, AUTOSAR capable, low value, compatible with multiple cell chemistries and is currently in production.
Inverters, battery packs and different HEV/EV components create a high-voltage atmosphere which will be dangerous to drivers and service technicians.
Delphi says its electrical and electronic design systems facilitate keep both safe with physical harness protection systems, battery monitoring devices, plug-in charging systems and a series of affiliation systems that incorporate the shielding, sealing and high-voltage safety interconnects needed for top-voltage/high-power applications.
The Aachen Colloquium "Automobile and Engine Technology" has become the most important automotive and engine technology congress in Europe, and there Delphi, a major automotive supplier, has shown technical papers describing its close to production-ready Selective Catalytic Reduction (SCR) dosing system. This system provides what the corporate describes as a uniquely price-effective approach to urea injection.
Delphi’s papers can conjointly describe a Gasoline Direct Injection Compression Ignition (GDCI) engine that's currently in advanced development.
The papers are complemented by intensive hardware displays at the Delphi booth that embody a range of latest, light-weight power electronics merchandise for hybrid and electrical vehicles.
The 1st paper is titled “Delphi SCR Dosing System: An different approach for shut-coupled SCR catalyst systems.”
It explains how a brand new high-pressure water cooled urea doser simplifies the dosing system architecture compared to conventional approaches and how it is appropriate to be used on shut-coupled SCR exhaust systems #151; where the SCR catalyst is placed closer to the engine for faster light-off.
"The doser generates an outstanding spray quality enabling high levels of NOx conversion, even at low exhaust temperatures," explained David Needham, Delphi's chief engineer on the SCR system. "The innovative arrangement provides a straightforward and strong resolution for NOx reduction to meet Euro 6 Step a pair of emissions regulations, and to minimize CO2 emissions without the value and package increases normally associated with further aftertreatment."
The Delphi SCR system, that is suitable for passenger cars and light business vehicle applications, is complemented by a replacement ammonia sensor. SCR catalyst systems turn out ammonia so as to cut back NOx emissions.
Delphi-SCR-Dosing-system-schematic
According to Delphi, measuring ammonia with this sensor provides glorious feedback for precise urea dosing management, and offers an indication for on-board diagnostics (OBD) and monitoring of the SCR system. The first production application of Delphi's SCR dosing system is scheduled for 2015.
Gasoline direct injection compression ignition (GDCI)
Delphi's second paper, titled "Combustion System for Gasoline Direct Injection Compression Ignition (GDCI)" describes Delphi's work on a utterly new approach to combustion that delivers a mixture of low fuel consumption and low exhaust emissions.
"GDCI uses precise gasoline injection to enable well-timed and controlled compression ignition for prime potency with low combustion noise," said Harry Husted, chief engineer, Advanced Powertrain.
New two-stage diesel injector jointly demonstrated by Daimler and Delphi
A third paper, presented by Daimler AG, details the joint Daimler-Delphi development of a combustion system using a new prototype 2-stage diesel injector from Delphi.
According to the paper, the injector uses a replacement variable orifice nozzle (VON) concept to reduce the conflict between reduced emissions, increased power output and lower combustion noise. The additional control of fuel flow, made doable by the VON, permits bigger optimization of diesel combustion and has already shown improved half-load fuel economy with lower noise and smoke levels.
Delphi is also showcasing what it dubs as a vary of innovative power electronics merchandise, together with Delphi's high-performance inverter, DC/DC converter, on-board battery charger, battery management system and hybrid vehicle control unit.
Delphi says its high-performance inverter uses patented power silicon packaging to scale back value, size and weight whereas increasing overall reliability. The distinctive packaging eliminates wire bonds, allows higher current and power density, and when combined with twin-facet cooling, reduces power semiconductor area. The inverter is anticipated to start production in 2013.
Delphi conjointly stated its battery pack controller calculates state-of-charge, evaluates battery health and determines power out there for the vehicle. Using these calculations, it performs cell balancing to maintain cell safety and increase battery life. Delphi's battery pack controller is scalable, AUTOSAR capable, low value, compatible with multiple cell chemistries and is currently in production.
Inverters, battery packs and different HEV/EV components create a high-voltage atmosphere which will be dangerous to drivers and service technicians.
Delphi says its electrical and electronic design systems facilitate keep both safe with physical harness protection systems, battery monitoring devices, plug-in charging systems and a series of affiliation systems that incorporate the shielding, sealing and high-voltage safety interconnects needed for top-voltage/high-power applications.
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