Concept Engine, Exhaust and Powered

Achates Power continues development of opposed-piston technology for US Army vehicles

Green Car Congress

JANUARY 28, 2021

Achates Power was recently awarded a $5-million contract from the US Army to expand the family of opposed-piston engines for military vehicles. The project, awarded in late-2020, builds upon the success of the Advanced Combat Engine (ACE). Major, vice president, Achates Power. Achates Power is partnered with Cummins, Inc.

Power

Power Powered Vehicles Exhaust

Concept Engine: Ilmor Engineering to Show Cutaway of 5-Stroke Engine at Engine EXPO

Green Car Congress

MAY 7, 2009

Rendering of the Ilmor 5-stroke concept engine. Ilmor Engineering will present a new cutaway version of the Ilmor 5-stroke concept engine at the upcoming Engine EXPO 2009, 16-18 June, in Stuttgart, Germany. The 5-stroke concept engine is a self-funded proof of concept. Click to enlarge.

Concept Engine

Concept Engine Engine Concept Exhaust

Achates Power developing light-duty two-stroke opposed-piston diesel engine: the OP4

Green Car Congress

APRIL 17, 2013

Achates Power, which is developing a family of two-stroke, compression-ignition (CI) opposed-piston (OP) engines, has designed and is developing a light-duty diesel concept engine, the OP4. liter OM651 Euro 5 engine, said Fabien Redon VP, Technology Development at Achates Power, the OP4 design shows a modeled 13.5%

Light

Light Diesel Engine Power

Start-up Eco-Motive developing dual-fuel “H” engine; parallel, independently fueled piston banks

Green Car Congress

DECEMBER 1, 2014

The H-shaped engine comprises parallel left-side and right-side vertical inline piston banks, each having a crankshaft and pistons, a cylinder head, and individual fuel feeds, but sharing a common power transmission system. The selector control actuates a transfer system that prevents simultaneous operation of both engines.

Engine

Engine Fuel Concept Engine Gasoline-Electric

Scuderi Releases Video Footage of Running Split-Cycle 1L Prototype

Green Car Congress

OCTOBER 8, 2009

Split-cycle engines separate the four strokes of intake, compression, power, and exhaust into two separate but paired cylinders. The compressed air is then transferred through a crossover passage from the compression cylinder into the second cylinder, where combustion and exhaust occur. The Scuderi Engine.

Concept Engine

Concept Engine Exhaust Concept Engine

Grail Engine Adopts Enerpulse Pulse Plugs for Forced Semi-Homogeneous Charged Compression Ignition in Concept Two-Stroke Engine

Green Car Congress

SEPTEMBER 8, 2009

Grail Engine Technologies , the designer of a two-stroke engine using forced semi-homogeneous charged compression ignition (FS-HCCI) combustion, has adopted the Pulstar pulse plugs from Enerpulse ( earlier post ). HCCI is a combustion regime in which well-mixed fuel, exhaust gas and air are compressed to the point of auto-ignition.

Engine

Engine Plug-in Concept Plug

ECONAMIQ: Flexible over-expansion with cylinder deactivation can reduce ICE fuel consumption by up to 20%

Green Car Congress

OCTOBER 29, 2019

By over-expanding into adjacent de-activated cylinders, ECONAMIQ creates an additional power stroke within the existing engine architecture, with a significant thermal efficiency increase and cost savings as a result. Using the virtual simulation environment GT-Power, this cycle is applied to a 4-cylinder SI engine.

Fuel

Fuel San Jose 2019 Engine

New split-cycle concept to control diesel HCCI combustion

Green Car Congress

OCTOBER 25, 2010

The turbocharged concept allows reaching engine speeds of 6,000 rpm, with a high indicated efficiency of 45% along with clean combustion; power density at 6,000 rpm is 64 kW, with 300 kPa intake pressure. Thus the HCPC range can extend to all engine operating conditions, including very high loads. Tamagna, D., Gentili, R.

Concept

Concept Diesel San Diego 2010

Concept: Downsized and Supercharged Hybrid Pneumatic Engine for 30%+ Reduction in Fuel Consumption

Green Car Congress

MAY 23, 2009

Researchers at ETH Zürich, with partners Robert Bosch GmbH, Wenko Swissauto and the Swiss Federal Office of Energy are developing a downsized and supercharged hybrid pneumatic engine that they say can deliver a fuel consumption reduction of more than 30% compared to a standard engine with the same rated power. Earlier post.).

Downsizing

Downsizing Concept Engine Hybrid

DOE to award $55.8M for advanced vehicle technologies; $35M for fuel cell and hydrogen

Green Car Congress

JANUARY 22, 2015

The new FOA supports the President’s EV Everywhere Grand Challenge, which seeks to make the United States the first country to produce a wide array of plug-in electric vehicle (PEV) models (including plug-in hybrids and all-electric vehicles) by 2022 that are as affordable and convenient as current gasoline powered vehicles we drive today.

Fuel

Fuel Hydrogen Vehicles Carbon Fiber

Motiv Engines introduces 2nd-generation split-cycle concept; MkII Clarke-Brayton heavy-duty engine being designed for LNG

Green Car Congress

MAY 8, 2014

It expands all the way to ambient pressure before the exhaust stroke. The power is produced in almost a 50-50 split between the combustion (central) and exhaust (largest) pistons. We have taken what we learned from our first engine and applied it to the new design. This enables a higher power density.

Engine

Engine Concept Design Exhaust

Revolutionary engine to make debut

Green Cars News

MAY 6, 2009

It is believed that when fully developed with its turbo charged and air hybrid components, the engine will achieve significant gains in fuel efficiency - potentially making it the most significant advance since the Otto cycle more than 130 years ago. Currently the engine prototype is undergoing testing and analysis in San Antonio, Texas.

Engine

Engine San Antonio Petrol Concept Engine

LiquidPiston introduces latest X-series version of HEHC rotary engine; targeting 58% peak BTE, 2 hp/lb power density

Green Car Congress

OCTOBER 18, 2012

Alexander Shkolnik, President and CEO, at the SAE High Efficiency IC Engine Symposium earlier this year, earlier post )—is a 40 hp (29 kW) multi-fuel capable rotary engine that requires no valves, cooling systems, radiators, mufflers, or other components.

Engine

Engine Power Powered Isuzu

Liquid Air Energy Network forms in UK; focus on transportation and energy storage

Green Car Congress

MAY 9, 2013

Example power cycle of the cryogenic (e.g., liquid air) Dearman piston engine. Source: Dearman Engine Company. Sources of low-grade waste heat include power stations to factories to vehicle engines. High efficiency internal combustion engine. Click to enlarge.

Energy Storage

Energy Storage Transportation Energy Waste

Concept: Garric Rotary Variable Compression Ratio Engine

Green Car Congress

SEPTEMBER 25, 2009

A pair of Florida entrepreneurs, Rick Ivas and Gary Kelley, are developing the concept of the Garric engine: a rotary, variable compression ratio engine promising a combination of high power and torque and low fuel consumption. The central hub (or power shaft) is connected to a disc with one or more pistons attached.

Concept

Concept Engine Exhaust Florida

Dalian team proposes jet controlled compression ignition to control PCCI phasing in a hybrid pneumatic engine

Green Car Congress

DECEMBER 30, 2015

Compound HPE is divided into a compressor cylinder and a power cylinder, combined with a compressed air storage tank. It compresses the pressurized gas produced by exhaust gas turbocharger, comprising fresh air and exhaust gas introduced from the EGR valve. Then it charges the compressed air storage tank. Credit: ACS.

Engine

Engine Hybrid Diesel Exhaust

Scuderi Group Unveils Cutaway Model of First Production Prototype of Split Cycle Engine

Green Car Congress

APRIL 20, 2009

The Scuderi Engine is a split-cycle design that divides the four strokes of a conventional combustion cycle over two paired cylinders: one intake/compression cylinder and one power/exhaust cylinder. The Scuderi engine achieves compression ratios in excess of 100:1 in its compression cylinder, Sal Scuderi said.

Engine

Engine San Antonio Production Concept Engine

Novel opposed-piston free-piston linear generator for hybrids seeks to overcome drawbacks of earlier designs

Green Car Congress

JUNE 6, 2012

Secondly, the central combustion chamber is benefit for highly efficient scavenging via intake and exhaust ports without using valves. Each of the two linear generators in the system is equipped with a mechanical spring, which is used for storing mechanical energy in the power stroke and releasing mechanical energy in the compression stroke.

Design

Design West Virginia Hybrid 2012

EV Driven

Achates Power continues development of opposed-piston technology for US Army vehicles

Concept Engine: Ilmor Engineering to Show Cutaway of 5-Stroke Engine at Engine EXPO

Achates Power developing light-duty two-stroke opposed-piston diesel engine: the OP4

Start-up Eco-Motive developing dual-fuel “H” engine; parallel, independently fueled piston banks

Scuderi Releases Video Footage of Running Split-Cycle 1L Prototype

Grail Engine Adopts Enerpulse Pulse Plugs for Forced Semi-Homogeneous Charged Compression Ignition in Concept Two-Stroke Engine

ECONAMIQ: Flexible over-expansion with cylinder deactivation can reduce ICE fuel consumption by up to 20%

New split-cycle concept to control diesel HCCI combustion

Concept: Downsized and Supercharged Hybrid Pneumatic Engine for 30%+ Reduction in Fuel Consumption

DOE to award $55.8M for advanced vehicle technologies; $35M for fuel cell and hydrogen

Motiv Engines introduces 2nd-generation split-cycle concept; MkII Clarke-Brayton heavy-duty engine being designed for LNG

Revolutionary engine to make debut

LiquidPiston introduces latest X-series version of HEHC rotary engine; targeting 58% peak BTE, 2 hp/lb power density

Liquid Air Energy Network forms in UK; focus on transportation and energy storage

Concept: Garric Rotary Variable Compression Ratio Engine

Dalian team proposes jet controlled compression ignition to control PCCI phasing in a hybrid pneumatic engine

Scuderi Group Unveils Cutaway Model of First Production Prototype of Split Cycle Engine

Novel opposed-piston free-piston linear generator for hybrids seeks to overcome drawbacks of earlier designs

Stay Connected