HJS Emission Technology was founded in 1976 with its headquarters based in Menden, Central Germany. HJS employs approximately 450 people who are engaged in the development, production and marketing of modular exhaust systems for reducing emissions for all road, rail, construction and marine applications.
Our business in the UK is supported by our dedicated sales, project management and technical teams operating from our facility in Swindon, Wiltshire. From this facility, our engineering team provide nationwide installation and technical support.
The reduction of Nitrogen Oxides (NOx) contributing to air pollution is one of the most challenging public health issues facing the UK today. Diesel exhaust emissions have been classified as carcinogenic to humans, reassigning it to the same class of hazardous materials as asbestos, arsenic and mustard gas. The majority of urban areas in the UK are struggling to meet stringent European requirements for NOx emissions and the government has been ordered by the Supreme Court to take action in the quickest time possible.
HJS work together with bus/coach operators and local authorities to improve air quality across the country. HJS are the pioneers of Selective Catalytic Reduction Technology (SCRT®) which can be retrofitted to significantly reduce NOx emissions and also virtually eliminate particulate matter. The HJS Real Blue SCRT® system meets Euro VI standards and is both ULEZ and CAZ compliant. System performance has been certified at Millbrook Proving Ground which has been followed up by several months of successful in service testing.
In 2019, Transport for London will introduce a 24/7 Ultra Low Emission Zone (ULEZ) to improve the problem of urban air quality in the capital. In addition to this Birmingham, Nottingham, Derby, Southampton and Leeds will be introducing Clean Air Zones (CAZ’s). 28 more cities and towns have also been identified requiring additional measures and Glasgow will become Scotland’s first Low Emission Zone at the end of 2018.
The HJS Real Blue SCRT® system is accredited by the Energy Saving Trust’s CVRAS (Clean Vehicle Reduction Technology Scheme). Our approved technology allows vehicles to be upgraded to meet LEZ, ULEZ and CAZ requirements and complies with the conditions set out within the Clean Bus Technology Fund (CBTF).
The SCRT® system combines a diesel particulate filter with an SCR unit for the reduction of nitrogen oxides. New buses that are already fitted with particulate filters can be retrofitted with an SCR unit to create an SCRT® system. Likewise, older vehicles without an exhaust treatment system can be retrofitted with an SCRT® system. SCRT® is currently the most advanced and effective exhaust gas aftertreatment technology available.
With the aid of an HJS filter soot particles can be filtered from diesel exhaust gases down to the limit of detection. It’s not just particulate matter that pollutes the environment and damages people’s health: gaseous substances such as Nitrogen Oxides are also harmful. In order to reduce the levels of these gases, HJS has contributed to the development of the SCRT® (Selective Catalytic Reduction Technology) system over the last 25 years.
Bus and coach operators can upgrade to EURO VI diesel emission standards
Millbrook certified solutions for the ULEZ in London and UK Clean Air Zones
A range of applications available for the most common buses in the UK
Over 3,000 transport vehicles throughout Europe are installed with the HJS SCRT®
Designed and manufactured in Germany to Original Equipment standards
Vehicle Certification Agency (VCA) approved
Clean Vehicle Retrofit Accreditation Scheme (CVRAS) approved
System operating information is logged at a frequency of 1Hz to 1,000Hz by the HJS telematics unit. All recorded data is then stored as a file which is then uploaded to the Cloud system every 2 to 10 minutes ensuring that the most recent data is available to view. If the GSM connection is temporarily unavailable, the telematics system will buffer the data until the data network connection is restored and data re-transmission will occur.
Where predetermined system operating limits are breached or if system servicing is required, text message and email alerts can be created.
ADL Enviro 200 EURO IV/V
ADL Enviro 400H EURO V
ADL Enviro 400 Euro IV/V
DAF BD250
Volvo B5LH EURO V
Dennis Dart – Cummins ISBe 4
Dennis Trident – Cummins ISBe 6
EvoBus Citaro G – 457 hLA
EvoBus Citaro S – 906 hLA / 906 LA
IVECO City class Cursor
MAN A 23 (D2866)
SCANIA Omnicity
SOLARIS URBINO (D2866)
VDL Ambassador SB 200 – ISBe 22030
Volvo 8700 BLE – DH12D340
Volvo B7TL
Founded in 1976 by Hermann Josef Schulte
Headquarters in Menden, central Germany
Number of employees 400
Family owned business
Wide range of proven retrofit emission control products
R&D engineering competences for diesel and petrol engines
OE series experience [VW, Daimler, MAN, etc.]
Flexible manufacturing structures
Retrofit system completely independent no impact on engine control unit
Convert your Taxi from Euro 5 to Euro 6 Emission Standards with HJS Retrofit SCR Technology
Sensor and dosing valve usage and position
Installation of 2 lamps in the dashboard for MIL (yellow) and refilling AdBlue (blue)
HJS have contributed to air quality improvements in the rail sector for
several years providing emission reduction exhaust systems equipped
with its innovative Sintered Metal Filter (SMF®) technology for
PM reduction.
Due to its unique design, the HJS SMF® has significant advantages in
comparison to conventional honeycomb filters in terms of ash loading
capacity and cleanability resulting in significantly lower ownership
costs over its life time. The ash loading capacity of an SMF® is approximately
1.8 times higher than a conventional filter which leads to up
to 30% more operating hours between cleaning cycles.
The SMF® has an open pocket structure allowing access to any ash
stored which can then be cleaned using a conventional pressure
washer. In summary, the HJS SMF® offers some key advantages when
compared to conventional DPF systems.
HJS UK have teamed up with Vivarail to provide particulate reduction
systems for their innovative diesel hybrid powered solution being installed
onto ex London underground rolling stock. Vivarail trains are
now being used on several commuter branch lines to boost passenger
capacity whilst reducing environmental impact thanks to the HJS SMF®.
With numerous inner city low emission zones and clean air zones being
introduced, the pressure is increasing on rail operators to reduce their
impact on air quality. In order to develop its NOx reduction applications
for the rail industry further, HJS UK are working closely with one of
the largest train leasing companies in the UK. The HJS SMF® will be
used in conjunction with an HJS SCR system to provide a substantial
reduction of PM, NOx and NO2 on a Cummins powered DMU.
HJS has been an OE supplier of exhaust-gas treatment systems to rail construction
manufacturers such as Plasser & Teurer and Robel (together with
various other companies) for over 10 years.
The higher ash storage capacity results in higher possible mileages
betweencleaning cycles within a range of 25 – 30 %.
Millbrook testing was a great success and fitment to an operating DMU is expected imminently
To improve air quality across the UK diesel van and mini bus owners can upgrade their vehicle using the HJS Euro 6 retrofit conversion. Our ULEZ retrofit and Clean Air Zone retrofit (CAZ retrofit) offer compliance to enter these zones charge free. HJS are the first company to offer Euro 6 conversions for vans and Euro 6 conversions for taxi’s.
HJS are the first retrofit exhaust system manufacturer to secure Energy Saving Trust (EST) certification for all power bands of fixed and variable speed Non Road Mobile Machinery (NRMM) applications. This includes approval for Stage 3b and Stage 4 engines where a compliant OE DPF is already fitted, and an HJS SCR system is retrofitted to achieve Stage 5.
HJS have worked tirelessly over the last 2 years with the Swiss Association VERT and have undertaken strict in-service testing in order to gain this accreditation.
In the current climate of uncertainty where compliant machinery is not widely available, the HJS SCR/T system gives NRMM owners and operators a cost-effective and timely alternative to purchasing new Stage 5 machinery.
Contact us today to discuss retrofitting your existing equipment to gain Stage 5 compliance. This is essential for the Greater London Authority NRMM low emission zone, on key infrastructure projects such as HS2, and on a growing number of key construction sites across the UK.
The Greater London Authority Low Emission Zone for Non Road Mobile Machinery
The Low Emission Zone in London applies to all Non Road Mobile Machinery (NRMM) with a net power rating of between 37kw and 560kw operating within central London.
The minimum emission standards for NRMM within London are detailed below:
NRMM used on the site of any major development, as defined in the London Plan within Greater London will be required to meet emission Stage 3A as a minimum
NRMM used on any site within the Central Activity Zone or Canary Wharf will be required to meet emission Stage 3B as a minimum
All eligible NRMM should meet the standards above unless it can be demonstrated that a comprehensive retrofit to meet both PM and NOx emission standards is not feasible. In this situation every effort should be made to use the least polluting equipment available including retrofitting technologies to reduce particulate matter emissions
| Central Activity Zone or Canary Wharf | Greater London | |
| From Sept 2020 | Stage IV or best available retrofit technology | Stage IIIB or best available retrofit technology |
With an estimated 10,000 active construction sites in London at any one time NRMM has been identified as one of the largest contributors to poor air quality in London.
Plant hire companies machine operators and construction organisations have the following compliance options:-
Retrofit existing machines with emission abatement technologies
Reorganise NRMM fleet to ensure compliant equipment is used
Replace or re-engine equipment
For the majority of operators the retrofitting of existing machinery will be the quickest, most effective and most reliable way of ensuring that they comply with the conditions set within the LEZ.
To find out more visit the energy savings trust website :- Click Here
HJS have installed thousands of emission abatement systems throughout the UK and Europe. These systems require regular servicing and maintenance in order to ensure efficient operation and maximum reliability. HJS’s dedicated team of specialist technicians can offer the full service and maintenance packages and more. Packages can be tailored to suit the requirements of our customers.
Our engineers are also able to troubleshoot and help diagnose vehicle issues which are reducing system servicing intervals.
To discuss your servicing options give us a call today on 01344 566050
HJS Emission Technology Ltd
Unit 11
Rushy Platt
Industrial Estate
Caen View
Swindon SN5 8WQ
United Kingdom
Web: www.hjs.com/uk
Mark Cooper
Head of Business Development and Sales
07733 227 889
mark.cooper@hjs.com
All sales enquiries call : 01344 566050
All aftersales and service enquiries call:
Dave Andrews
Operations Manager
Mobile: +49 160 93467187
Dave.andrews@hjs.com
Ben Parsons
Technical Project Manager/Service Manager
07716 639650
ben.parsons@hjs.com
Lamar Stevens
Technical Aftersales Manager
07885 489547
lamar.stevens@hjs.com
Go to HJS UK