Waltham, MA, United States
Waltham, MA, United States

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Patent
Tecogen | Date: 2017-04-19

A system and method for controlling an internal combustion engine and electrical inverter system for powering a load, including controlling the operation of a spark-ignited internal combustion engine prime mover used in generation of electrical power by way of a generator. A microprocessor (e.g., DSP) controlled circuit taking engine speed input from an engine speed signal is used to control the operation of the internal combustion engine prime mover so that it is preferably operated substantially at wide open throttle.


Patent
Tecogen | Date: 2015-10-13

A system and method for controlling an internal combustion engine and electrical inverter system for powering a load, including controlling the operation of a spark-ignited internal combustion engine prime mover used in generation of electrical power by way of a generator. A microprocessor (e.g., DSP) controlled circuit taking engine speed input from an engine speed signal is used to control the operation of the internal combustion engine prime mover so that it is preferably operated substantially at wide open throttle.


News Article | May 11, 2017
Site: www.marketwired.com

Delivers operating profit driven by dramatic 34.9% growth in revenues and 25.7% combined gross margin improvement WALTHAM, MA--(Marketwired - May 11, 2017) - Tecogen® Inc. ( : TGEN), a leading manufacturer of clean energy products which, through patented technology, nearly eliminate criteria pollutants and significantly reduce a customer's carbon footprint, reported revenues of $6,846,767 for the quarter ended March 31, 2017 compared to $5,075,515 for the same period in 2016, or 34.9% growth in top line revenue. Income from operations was $77,702 compared to a $906,866 loss in the prior year comparable period. Similarly, Tecogen delivered net income for the quarter of $44,787 compared to a loss of $893,168 in the first quarter 2016. Commenting about the quarter, Tecogen Co-Chief Executive Officer Benjamin Locke noted, "The first quarter of 2017 is the third straight quarter of profitable operation for the company. This is a direct result of the hard work completed in 2016 on cost controls, product improvements, and strategic sales partnerships. We are very pleased with these results, and hope to continue this trend throughout 2017." Revenue results were driven by solid growth in both product and services related revenues. Total services related revenues grew 43.8% over the prior year period, driven by installation activity, while product revenue grew 23.9% compared to first quarter 2016, helped by strong cogeneration sales. Cost control initiatives generated 25.7% combined gross margin improvement in the quarter, bringing gross margin up to 42.6% compared to 33.9% in first quarter of 2016, and above management's targeted 35-40% gross margin range. The increase in margins was the direct result of product upgrades and improvements. On a combined basis, operating expense increased to $2,836,971 for the first quarter 2017 from $2,626,210 in the same quarter of 2016. Backlog of products and installations was $13.6 million as of first quarter end, and currently stands at $14.3 million as of Monday, May 8, 2017. Speaking about the results and other recent news, Mr. Locke added, "2017 will be an exciting year for Tecogen. In addition to our financial success, we expect to finalize the acquisition of American DG Energy in the second quarter, subject to the shareholder vote. This will add steady revenue with good margins to the financials of Tecogen, helping to offset some of the peaks and valleys of products sales. In 2016, ADGE made substantial improvements to the operational and financial production of their installed fleet. As a result of the merger, we believe further improvements to the fleet are possible, which will provide more revenue and improved operating margins. Upon approval, we will welcome ADGE shareholders to Tecogen, and make them a long term part of our investor group as we continue growing our core business, our emissions technology for fork trucks, and our automotive emissions joint venture, Ultratek." Conference Call Scheduled for Today at 11:00 am ET Tecogen will host a conference call today to discuss the first quarter results beginning at 11:00 am eastern time. To listen to the call dial (888) 349-0103 within the U.S., (855) 669-9657 from Canada, or (412) 902-0129 from other international locations. Participants should ask to be joined to the Tecogen Inc. call. Please begin dialing at least 10 minutes before the scheduled starting time. The earnings press release will be available on the Company website at www.Tecogen.com in the "News and Events" section under "About Us." The conference call will be recorded and available for playback one hour after the end of the call. The earnings conference call will also be webcast live. To view the associated slides, register for and listen to the webcast, go to http://investors.tecogen.com/webcast. Following the call, the webcast will be archived for 30 days. The earnings conference call will be recorded and available for playback one hour after the end of the call through Thursday, May 18th, 2017. To listen to the playback, dial (877) 344 7529 within the U.S., (855) 669-9658 from Canada, or (412) 317-0088 outside the U.S. and use Replay Access Code 10105269. Tecogen Inc. designs, manufactures, sells, installs, and maintains high efficiency, ultra-clean, cogeneration products including natural gas engine-driven combined heat and power, air conditioning systems, and high-efficiency water heaters for residential, commercial, recreational and industrial use. The company is known for cost efficient, environmentally friendly and reliable products for energy production that, through patented technology, nearly eliminate criteria pollutants and significantly reduce a customer's carbon footprint. In business for over 20 years, Tecogen has shipped more than 2,300 units, supported by an established network of engineering, sales, and service personnel across the United States. For more information, please visit www.tecogen.com or contact us for a free Site Assessment. Tecogen, InVerde, Ilios, Tecochill, Ultera, and e+, are registered trademarks or trademark pending registration of Tecogen Inc. Forward Looking Statements: This press release contains forward-looking statements under the Private Securities Litigation Reform Act of 1995 that involve a number of risks and uncertainties. Important factors could cause actual results to differ materially from those indicated by such forward-looking statements, as disclosed on the Company's website and in Securities and Exchange Commission filings. The statements in this press release are made as of the date of this press release, even if subsequently made available by the Company on its website or otherwise. The Company does not assume any obligation to update the forward-looking statements provided to reflect events that occur or circumstances that exist after the date on which they were made.


WALTHAM, Mass., April 28, 2017 /PRNewswire/ -- Tecogen, Inc. (Nasdaq: TGEN) and American DG Energy Inc. (NYSE: ADGE) today announced that on April 17, 2017 each of them has commenced the mailing of their respective Notice of Special Meeting and definitive proxy statement/prospectus in...


A system for reducing ammonia in exhaust gas generated from a lean burn internal combustion engine includes an oxidation catalyst, a selective reduction catalyst (SCR), a cooling unit, and a three-way catalyst. Exhaust gas generated by the engine passes through the oxidation catalyst to oxidize carbon monoxide from the exhaust gas to form carbon dioxide. Nitrous oxide (NOx) compounds in the exhaust gas are reduced in the SCR to form nitrogen and water. The exhaust gas is then cooled in a cooling unit and then passed over the three-way catalyst. The three-way catalyst causes ammonia in the cooled exhaust stream to react to form less harmful compounds, such as nitrogen and water.


Methods and apparatus for removing undesired pollutants from exhausts streams of spark-ignited internal-combustion engines in vehicles while producing electrical energy as a byproduct. The apparatus includes a reduction catalyst, a thermoelectric generator (TEG), and an oxidation catalyst. The TEG cools the exhaust stream and generates electricity. The exhaust stream is oxygenated after passing through the TEG and prior to passing through the oxidation catalyst.


Patent
Tecogen | Date: 2016-03-24

A poison-resistant catalytic converter includes a washcoat having a support material comprised of titania and/or silica and a plurality of platinum group metal particles disposed in the support material. The washcoat is disposed on a substrate having a plurality of cells that define respective apertures. The catalytic converter is resistant to poisoning from sulfur and phosphorous compounds while operating at low temperatures. Applications include spark ignited internal combustion engines in combined heat and power systems, vehicles, combustion turbines, boilers and other applications for utilities, industry and vehicle emissions control.


An assembly and method for reducing nitrogen oxides, carbon monoxide and hydrocarbons in exhausts of internal combustion engines, wherein the exhaust is acted upon in a first stage catalytic converter. A first portion of the first stage catalytic converter output is cooled and a second portion of the catalytic converter output is not cooled. The cooled and not cooled exhausts are united and directed to a second stage catalytic converter. Air is injected into a selected one of (1) the not cooled exhaust prior to the juncture thereof with the cooled exhaust, and (2) the combined cooled and not cooled exhausts after the juncture thereof.


An assembly and method for reducing nitrogen oxides, carbon monoxide and hydrocarbons in exhausts of internal combustion engines, wherein the exhaust is acted upon in a first stage catalytic converter. A first portion of the first stage catalytic converter output is cooled and a second portion of the catalytic converter output is not cooled. The cooled and not cooled exhausts are united and directed to a second stage catalytic converter. Air is injected into a selected one of (1) the not cooled exhaust prior to the juncture thereof with the cooled exhaust, and (2) the combined cooled and not cooled exhausts after the juncture thereof.


A method of operating a catalytic system for reducing emissions from a rich burn spark-ignited engine, comprising controlling intake air and fuel (AFR) to produce first exhaust gases substantially free of oxygen; passing said first exhaust gases into a first-stage catalyst chamber containing a three-way catalyst (TWC) operating above 800 F, which minimizes NOx content by reducing NOx (to N_(2) and O_(2)). Further, passing exhaust gases exiting from the first-stage catalyst chamber to an inter-stage cooling chamber having cooling means, and cooling by-pass means, which are used to adjust gas temperature to a controlled Tmix = 390 - 520 F, as well as secondary air injection means, which enriches the oxygen content to about 0.25 - 1.0%; passing exhaust gases exiting from the inter-stage cooling chamber to a second-stage catalyst chamber containing a catalyst that minimizes CO content by oxidizing CO to CO_(2).

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