DPF
Captures particulate matter and soot from the diesel exhaust.
CatalogueEvery system validated on an engine before dispatch
Emission Control Technologies
Urea SCR, urea-less SCR, DOC + DPF, retrofit kits, thermal management and dosing controls, with full specifications, compliance mapping and side-by-side comparison.
95%
NOx conversion
99%
PM filtration
2.5 – 5 MW
Largest SCR system
CPCB IV+
Emission norm
Filter Products
Showing 18 of 18 products
CPCB-IV+
NOx Reduction
Urea SCR System
High-power urea SCR platform for gensets and industrial engines: DOC, DPF, decomposition mixer, SCR and ammonia-slip catalyst with closed-loop AUS 32 dosing.
- Engine power
- 75–800 kW
- NOx Conversion
- ≥95% @ rated power
- Operating Window
- Wide working window
CPCB IV+Stage VEuro VIISO 22241
CPCB-IV+
NOx Reduction
Urea-Free SCR System
Urea-less SCR for compact gensets, tractors and CEV. No AUS 32 tank, no AUS 32 supply chain, and effective at the low exhaust temperatures where urea cannot decompose.
- Engine power
- 19–75 kW
- NOx Conversion
- ≥85% @ rated power
- Operating Window
- Wide working window
CPCB IV+Stage V
Stage-V
NOx Reduction
Compact SCR Module
Space-optimised SCR with integrated dosing and control for compact construction, agricultural and genset applications.
- Engine power
- 15–50 kW
- NOx Conversion
- ≥80% @ rated power
- Operating Window
- Mid-range working window
CPCB IV+Stage V
Stage-V
Particulate Control
DOC + DPF System
Oxidation catalyst and wall-flow particulate filter in one canned housing, with passive regeneration and active regeneration for demanding duty cycles.
- Engine power
- 50–150 kW
- PM Filtration
- ≥99% @ rated flow
- HC Oxidation
- ≥90%
CPCB IV+Stage VEuro VI
CPCB-IV+
NOx Reduction
Integrated DPF + SCR + ASC Catalyst
A single catalyst unit that combines particulate filtration, urea-based NOx reduction and ammonia slip control for stationary diesel engines. It is designed to be compact, to manage exhaust back pressure and to simplify installation, subject to engine-specific validation.
- Engine power
- 1,000–10,000 kVA
- Functions
- DPF + SCR + ASC in one unit
- Segment
- 1,000–10,000 kVA stationary diesel
CPCB IV+CAQM Direction 76 where applicable
CPCB-IV+
Controls & Dosing
Urea Tank Module
Urea storage modules from 25 L to 1,000 L for different engine ratings, operating durations and installations, with level measurement, quality measurement and data logging built in.
- Engine power
- 25–1,000 L
- Capacity
- 25 L to 1,000 L
- Level accuracy
- ±1 percentage point, per validation conditions
CPCB IV+
CPCB-IV+
Retrofit
Retrofit Emission Control Kit
Retrofit emission control for installed DG sets: DOC + DPF with optional SCR, engineered to each site so existing engines keep running under the new norms.
- Engine power
- Up to 800 kW
- PM Reduction
- Up to 99%
- NOx Option
- Urea or urea-less SCR add-on
CPCB IV+CAQMICAT type approved
Euro-VI
Thermal Management
Oxidation Booster
Active and passive thermal module: injector, electric heater and flow valve generate heat by oxidation upstream of the catalyst for fast light-off at low load.
- Engine power
- 15–800 kW
- Thermal Output
- 3–6 kW configurable
- Temperature Rise
- Rapid heat-up
CPCB IV+Stage VEuro VIISO 16750
Euro-VI
Controls & Dosing
Aftertreatment Control Unit
Aftertreatment control unit running dosing, heater, purge and regeneration strategies with NOx feedback, OBD diagnostics and CAN to the engine ECU.
- Engine power
- All system sizes
- Interfaces
- CAN J1939, PWM, analog
- Supply
- 12 / 24 V DC
OBDAutomotive EMCISO 16750
Euro-VI
Controls & Dosing
Urea Dosing Pump Module
Automotive-grade electric diaphragm or gear pump for urea SCR and urea-less SCR, self-priming with dry-run protection and an optional integrated heater.
- Engine power
- Matched to engine demand
- Flow Rate
- Matched to engine demand (PWM)
- Pressure
- Stable supply pressure
ISO 22241Automotive EMCIP67
Dual-Fuel
Dual-Fuel
Oil-Free CNG Booster Pump
Compact self-contained booster that lifts low-pressure CNG to a steady pressure for the injectors of diesel engines running dual-fuel. The motor and every electrical part sit behind an isolated drive section, so gas never touches electrics, and an internal buffer gallery keeps supply continuous.
- Engine power
- Diesel dual-fuel engines
- Inlet Pressure
- Low-pressure CNG
- Delivery to Injector
- Steady injector pressure
100% oil-freeIsolated drivePressure sensor
Euro-VI
Controls & Dosing
Urea Dosing Injector
Solenoid-actuated AUS 32 injector with a multi-hole spray optimised for exhaust mixing, a purge strategy against crystallisation and an optional nozzle heater.
- Engine power
- Demand-matched dosing
- Flow Rate
- Demand-matched dosing (PWM)
- Pressure
- Stable supply pressure
ISO 22241Automotive EMCIP69K
CPCB-IV+
Controls & Dosing
Integral Actuator
Integral electric actuator for closed-loop engine speed control on rotary fuel-injection pumps. Sealed, all-metal, with no sliding parts.
- Engine power
- 12 / 24 V DC
- Nominal Current
- Low current draw
- Max Continuous
- Low peak current
100% testedSealed metal design
CPCB-IV+
Thermal Management
Exhaust Heater
PWM-controlled electric exhaust heater that keeps DOC, DPF and SCR in their working window at light load. One-box design with built-in diagnostics and protection, no relays or fuses needed.
- Engine power
- High-output element
- Rated Power
- High-output element, 24 V DC
- Supply Range
- 12–54 V (8–60 V extended)
ESD protectedEMC optimised
CPCB-IV+
Particulate Control
Active Regeneration Module
Fuel injector and heater that raise exhaust temperature on demand, so the DPF regenerates reliably whatever the genset load. Retrofit-ready for any genset.
- Engine power
- Up to 1600 kW
- Trigger
- Filter backpressure set point
- Fuel Dose
- Metered, atomised diesel
Retrofit-readyData logging
CPCB-IV+
Controls & Dosing
Online Emission Monitoring
Online monitoring for Maxmoc RECDs and SCR systems: live back pressure, temperatures and engine speed, alerts, regeneration logs and fault codes.
- Engine power
- All system sizes
- Measurements
- ΔP, pressure, temperature, RPM
- Calibration
- Read and write ECU maps
CAN / J1939Remote access
IMO Tier III
Marine
Low-Pressure Marine SCR
Low-pressure SCR for 4-stroke engines on MGO or HFO, and for 2-stroke engines up to 82 MW on low-sulphur fuel. Compact units, closed-loop dosing and full automatic control for onboard installation.
- Engine power
- 0.5–82 MW
- Compliance
- IMO NOx Tier III in NECA
- Fuel
- <0.1 % S, or <3.5 % S design for 4-stroke
IMO Tier IIIMarine class design
IMO Tier III
Marine
High-Pressure Marine SCR
High-pressure SCR for 2-stroke main engines up to 33 MW, designed for fuel up to 3.5 % sulphur, with the reactor ahead of the turbocharger.
- Engine power
- 2–33 MW
- Compliance
- IMO NOx Tier III
- Fuel
- Up to 3.5 % sulphur HFO
IMO Tier IIIHFO capable
▪ Integrated after-treatment
DPF, SCR and ASC in a single catalyst unit
Maxmoc is introducing an integrated diesel engine after-treatment technology for stationary diesel engines, particularly in the 1,000–10,000 kVA segment, to help meet NOx and particulate matter (PM) requirements under the applicable Indian regulatory framework, including CPCB IV+ and CAQM Direction No. 76 where applicable. Separate DPF, SCR and ASC components add size, complexity and exhaust back pressure. Combining them in one catalyst unit is designed to keep the system compact.
SCR
Reduces nitrogen oxide (NOx) emissions through a urea-based exhaust treatment process.
ASC
Helps control excess ammonia escaping from the SCR stage.
Compact design
Several emission-control functions in a single catalyst unit.
Optimised back pressure
Designed to add less exhaust restriction than a multi-component arrangement, subject to engine-specific validation.
Simplified integration
Fewer components, simpler system packaging and a simpler installation.
Complete emission control
Addresses NOx and particulate matter while helping manage ammonia slip.
Urea dosing, control and regeneration, made in house
Maxmoc develops its own urea dosing pump, injector and After-Treatment Control Module (ATCM). The control architecture coordinates urea injection and after-treatment operation with the engine operating conditions and the emission-control requirements, so the solution does not rely entirely on externally sourced dosing and control parts.
Maxmoc also develops its own active regeneration technology, which helps manage soot accumulation and reduces the risk of DPF clogging under suitable operating conditions. It supports effective soot management, controlled regeneration, better operational reliability and management of exhaust back pressure. Regeneration strategies are configured for the engine, its exhaust temperatures and its duty cycle.
Urea tank modules from 25 L to 1,000 L
Tank modules cover different engine ratings, operating durations and installation requirements, with intelligent monitoring and measurement built in.
- Urea level measurement
- Proprietary level module designed for ±1 percentage point accuracy, subject to the specified operating and validation conditions.
- Urea quality monitoring
- Quality measurement that helps monitor the dosing fluid and supports applicable regulatory requirements.
- Data logging and monitoring
- Records relevant operating and fluid-level information for maintenance and system monitoring.
- In-house sensor technology
- Maxmoc develops and manufactures its own sensors, so the tank module, dosing system and controller work closely together.
Retrofit solutions for existing diesel engines
Maxmoc reports that its retrofit solution has been tested at the International Centre for Automotive Technology (ICAT), with test reports available for the relevant configurations. The reported validation covers selected older-generation engines, including CPCB I and CPCB II engines, upgraded with the complete Maxmoc after-treatment system to meet CPCB IV+ emission requirements. It can help customers modernise existing generator installations without necessarily replacing the engine or the genset.
- Potential to upgrade eligible existing diesel engines
- Reduced dependence on complete engine replacement
- A retrofit pathway for installations that need better emission performance
- Filtration, NOx reduction, dosing, control and monitoring in one system
Important: CPCB IV+ compliance through retrofit depends on the specific engine model, rating, duty cycle, installation and applicable approval requirements. Review the ICAT test reports and any required regulatory approvals to establish the precise scope of compliance.
The complete in-house after-treatment ecosystem
- 01Integrated DPF + SCR + ASC catalyst
- 02In-house urea dosing pump and injector
- 03Proprietary After-Treatment Control Module
- 04Active DPF regeneration technology
- 05Urea tank modules from 25 L to 1,000 L
- 06Proprietary urea level measurement and monitoring
- 07Urea quality measurement technology
- 08Retrofit solutions for eligible legacy diesel engines
Rather than supplying individual components, Maxmoc aims to provide a complete, application-specific emission-control system designed around the customer’s engine, operating conditions and the applicable regulatory requirements, to support cleaner diesel power generation.
▪ Breath
One breath, from fire to clean air.
A short film in one unbroken take: a single breath of diesel exhaust travels through the oxidation catalyst, the filter, the dosing and the SCR of a Maxmoc system, and leaves as clean air.
3:50 · Chapters
▪ Reaction timeline
From raw exhaust to clean air, one reaction at a time
DOC
Diesel oxidation catalyst
Oxidises CO and HC, and turns part of the NO into NO₂ for passive regeneration and fast SCR.
- 2CO + O₂ → 2CO₂
- 2NO + O₂ → 2NO₂
Light-off for CO and HCWorking window
ColdWarmHot
NOx900 ppm
Raw ~900 ppm
PM90.0 mg/m³
Raw ~90 mg/m³
Indicative values at the outlet of each stage on a urea SCR line at rated power.
▪ Catalyst technology
Catalysts chosen for each duty
Every Maxmoc system starts from the engine's exhaust temperature, duty cycle and fuel. We match the SCR catalyst to that window and tune the oxidation catalyst for fast light-off and passive regeneration, so the system stays in its working range on the real load profile.
| Duty profile | NOx conversion | Sulphur tolerance | Thermal stability |
|---|---|---|---|
| Rugged, high-sulphur duty | ≥95 % | High | High |
| Very hot exhaust | ≥90 % | High | Very high |
| Low-temperature and cold-start duty | ≥95 % | Clean fuel | High |
| Particulate filter | What you get |
|---|---|
| Soot holding | High, for longer intervals between regenerations |
| Backpressure under soot | Low, within the engine OEM limit |
| Filtration | Up to 99.99 % of particle number in test |
| Service | Quick-release housing for ash cleaning |
▪ Inside Maxmoc
Your engine is ready. Then the norm changes.
What happens when compliance lands on your launch plan, and how Maxmoc sizes, builds, proves and supports the system that gets your engine out on time and clean.
2:18 · Chapters